s The County-Level View of Unauthorized Immigrants and Implications for Executive Action Implementation By www.migrationpolicy.org Published On :: Fri, 09 Jan 2015 13:23:21 -0500 A webinar showcasing MPI's profiles of unauthorized immigrants in the 94 U.S. counties with the largest populations potentially eligible for DACA or DAPA, and the implications of the data for implementation of the DACA and DAPA programs. Full Article
s Is This Working? Assessment and Evaluation Methods Used to Build and Access Language Services in Social Services Agencies In Social Services Agencies By www.migrationpolicy.org Published On :: Wed, 01 Jul 2009 00:00:00 -0400 The enactment of President Clinton’s Limited English Proficiency (LEP) Executive Order, issued in 2000, triggered a proliferation of efforts to provide services to individuals who cannot speak, understand, read, or write English fluently. With increased service provision, state and local government agencies have expressed a strong and growing interest in assuring the quality and cost-effectiveness of language access services. This paper attempts to catalog and describe some of those tools and practices. Full Article
s Communicating More for Less: Using Translation and Interpretation Technology to Serve Limited English Proficient Individuals By www.migrationpolicy.org Published On :: Sat, 01 Jan 2011 00:00:00 -0500 This report provides an overview of several commonly used translation and interpretation technologies. It aims to assist language access practitioners in understanding and identifying which systems would best meet their agency’s language access needs. Full Article
s Proactive Engagement: Two Strategies for Providing Language Access in Workforce Development Services By www.migrationpolicy.org Published On :: Wed, 03 Aug 2011 00:00:00 -0400 This interactive language access webinar, one in a series offered by the Migration Policy Institute's National Center on Immigrant Integration Policy, examines how New York and Illinois have broken down some of these barriers to proactively engage LEP communities to obtain workforce services. Full Article
s Proactive Engagement: Two Strategies for Providing Language Access in Workforce Development Services By www.migrationpolicy.org Published On :: Thu, 04 Aug 2011 00:00:00 -0400 This webinar examines how New York and Illinois have proactively engaged Limited English Proficient (LEP) communities to obtain workforce services. Full Article
s LEP Workers & Access to Workforce Services: Perspectives on Current Barriers to Access and Prospects for Improvements Under WIA Reauthorization By www.migrationpolicy.org Published On :: Wed, 21 Sep 2011 00:00:00 -0400 In this webinar, experts discuss barriers immigrant and LEP individuals face in accessing the WIA system, how a revitalized WIA could address these barriers, and the extent to which the current Senate Health, Education, Labor, and Pensions (HELP) Committee's WIA reauthorization proposal addresses these barriers. Full Article
s Language Access and Schools: Federal Requirements and School Experiences By www.migrationpolicy.org Published On :: Thu, 06 Oct 2011 00:00:00 -0400 This is the latest in NCIIP’s language access webinar series exploring the policy and program implementation imperatives for government and community agencies serving Limited English Proficient (LEP) populations. Full Article
s Language Access and Schools: Federal Requirements and School Experiences By www.migrationpolicy.org Published On :: Fri, 07 Oct 2011 00:00:00 -0400 This webinar from the MPI’s National Center on Immigrant Integration Policy and the U.S. Conference of Catholic Bishops’ Bridging Refugee Youth & Children’s Services program explores federal requirements for providing interpretation and translation in schools and how select school districts in Minnesota and Colorado have managed these requirements. Full Article
s Limited English Proficient Individuals in the United States: Number, Share, Growth, and Linguistic Diversity By www.migrationpolicy.org Published On :: Thu, 01 Dec 2011 00:00:00 -0500 The number of U.S. residents deemed Limited English Proficient (LEP) has increased substantially in recent decades, consistent with the growth of the U.S. foreign-born population. This brief offers analysis on the number, share, growth, and linguistic diversity of LEP individuals in the United States from 1990 to 2010 at the national, state, and metropolitan-area levels. Full Article
s Federal Update: A Conversation on Language Access with the U.S. Department of Justice By www.migrationpolicy.org Published On :: Tue, 08 May 2012 00:00:00 -0400 This MPI webinar features U.S. Department of Justice (DOJ) officials discussing the department’s efforts to improve communications with Limited English Proficient (LEP) communities in federal and federally-funded programs and activities. Full Article
s Federal Update: A Conversation on Language Access with the U.S. Department of Justice By www.migrationpolicy.org Published On :: Wed, 09 May 2012 00:00:00 -0400 This MPI webinar features U.S. Department of Justice (DOJ) officials discussing the department’s efforts to improve communications with Limited English Proficient (LEP) communities in federal and federally-funded programs and activities. Full Article
s Making It Work: Lessons in Collaboration on Language Access Contracting By www.migrationpolicy.org Published On :: Wed, 19 Sep 2012 00:00:00 -0400 A webinar on language access contracting for federal, state, and local officials, agency administrators, and community stakeholders concerned with the oversight and implementation of language access provision. Full Article
s Making It Work: Lessons in Collaboration on Language Access Contracting By www.migrationpolicy.org Published On :: Wed, 19 Sep 2012 18:00:00 -0400 A webinar on language access contracting for federal, state, and local officials, agency administrators, and community stakeholders concerned with the oversight and implementation of language access provision. Full Article
s Overcoming WIOA’s Barriers to Immigrant and Refugee Adult Learners By www.migrationpolicy.org Published On :: Sun, 13 Sep 2015 20:17:24 -0400 A webinar examining aspects of the implementation at state and local levels of the federal Workforce Innovation and Opportunity Act (WIOA) that may limit immigrant integration, along with a discussion on strategies that may help ensure more equitable access for immigrants and refugees to services provided under the law. Full Article
s Immigrant Legalization: Assessing Labor Market Effects By www.migrationpolicy.org Published On :: Mon, 12 Apr 2010 00:00:00 -0400 Public Policy Institute of California researchers Magnus Lofstrom and Laura Hill discuss their research examining the potential labor market outcomes and other possible economic effects of a legalization program. Full Article
s Immigrant Legalization: Assessing Labor Market Effects By www.migrationpolicy.org Published On :: Tue, 13 Apr 2010 00:00:00 -0400 Public Policy Institute of California researchers Magnus Lofstrom and Laura Hill discuss their research examining the potential labor market outcomes and other possible economic effects of a legalization program. The discussion was moderated by Doris Meissner, MPI Senior Fellow and Director of the U.S. Immigration Policy Program, with comments from MPI Senior Policy Analyst Randy Capps and Sherrie A. Kossoudji, Associate Professor, School of Social Work, and Adjunct Professor, Department of Economics, University of Michigan. Full Article
s The Impact of Immigrants in Recession and Economic Expansion By www.migrationpolicy.org Published On :: Tue, 01 Jun 2010 00:00:00 -0400 A broad consensus exists that the long-term impact of immigration on Americans' average income is small but positive, improving employment, productivity, and income. In the short term, however, immigration may slightly reduce native employment and average income. This report provides an analysis of short- and long-run impacts of immigration over the business cycle. Full Article
s Immigrants: Contributors to the Economy or Competitors for American Jobs? By www.migrationpolicy.org Published On :: Mon, 07 Jun 2010 00:00:00 -0400 Briefing and discussion of the release of the latest paper by MPI's Labor Markets Initiative: The Impact of Immigrants in Recession and Economic Expansion. Full Article
s Immigrants: Contributors to the Economy or Competitors for American Jobs? By www.migrationpolicy.org Published On :: Tue, 08 Jun 2010 00:00:00 -0400 Briefing and discussion of the release of the latest paper by MPI's Labor Markets Initiative. Speakers are report author Giovanni Peri, UC Davis Professor of Economics; Ross Eisenbrey, Vice President, Economic Policy Institute; and Demetrios G. Papademetriou, MPI President. Full Article
s Still an Hourglass?: Immigrant Workers in Middle-Skilled Jobs By www.migrationpolicy.org Published On :: Tue, 21 Sep 2010 00:00:00 -0400 Report release on the immigrant workforce and skills with the U.S. Department of Education Assistant Secretary for Postsecondary Education; the Director of the Georgetown University Center on Education and the Workforce; and report authors. Full Article
s Migration and Immigrants Two Years after the Financial Collapse: Where Do We Stand? By www.migrationpolicy.org Published On :: Fri, 01 Oct 2010 00:00:00 -0400 Immigrants have been disproportionately hit by the global economic crisis that began in 2008 and now confront a number of challenges. The report, which has a particular focus on Germany, Ireland, Spain, the United Kingdom, and United States finds that the unemployment gap between immigrant and native workers has widened in many places. Full Article
s Immigration Policy and Less-Skilled Workers in the United States: Reflections on Future Directions for Reform By www.migrationpolicy.org Published On :: Sat, 01 Jan 2011 00:00:00 -0500 Notwithstanding the broad consensus on the benefits of highly skilled immigration, the economic role of less-skilled immigrants is one of the more controversial questions in the immigration debate. While less-skilled immigrants bring economic benefits for U.S. consumers, employers, and skilled workers, they impose some costs on U.S. workers competing for similar jobs. Full Article
s Does Low-Skilled Immigration Hurt the U.S. Economy? Assessing the Evidence By www.migrationpolicy.org Published On :: Thu, 13 Jan 2011 00:00:00 -0500 In a report by MPI's Labor Markets Initiative, noted economist and Georgetown University Public Policy Institute Professor Harry J. Holzer examines the economic reasoning and research on these questions and looks at the policy options that shape the impact of less-skilled immigration on the economy. The discussion is on what policy reform would best serve native-born American workers, consumers, and employers, as well as the overall U.S. economy. Full Article
s Steps to Fix the U.S. Immigration System: What Can the Administration Do? By www.migrationpolicy.org Published On :: Mon, 14 Mar 2011 00:00:00 -0400 This discussion focuses on the MPI report, "Executive Action on Immigration: Six Ways to Make the System Work Better," which outlines administrative actions that can be implemented to improve the immigration system. Full Article
s Migration and the Great Recession: The Transatlantic Experience By www.migrationpolicy.org Published On :: Tue, 14 Jun 2011 00:00:00 -0400 The release event for MPI’s book, Migration and the Great Recession: The Transatlantic Experience, which reviews how the financial and economic crisis of the late 2000s marked a sudden and dramatic interruption in international migration trends, and the effects of the economic turmoil on immigrant workers in major immigrant-receiving countries in Europe as well as the United States. Full Article
s Labor Standards Enforcement and Low-Wage Immigrants: Creating an Effective Enforcement System By www.migrationpolicy.org Published On :: Fri, 01 Jul 2011 00:00:00 -0400 This report highlights gaps and anomalies in labor protection, while recognizing that U.S. law sets significant standards for minimum wage, overtime pay, child labor, safe and healthy workplaces, antidiscrimination, labor organizing, and collective bargaining. Full Article
s Labor Standards Enforcement and Low-Wage Immigrants: Creating an Effective Enforcement System By www.migrationpolicy.org Published On :: Thu, 14 Jul 2011 00:00:00 -0400 This Migration Policy Institute webinar discusses labor enforcement laws during the Clinton, Bush and Obama administrations and chronicles gaps in labor protection. Full Article
s Labor Standards Enforcement and Low-Wage Immigrants: Creating an Effective Enforcement System By www.migrationpolicy.org Published On :: Fri, 15 Jul 2011 00:00:00 -0400 This webinar discusses labor enforcement laws during the Clinton, Bush, and Obama administrations and chronicles gaps in labor protection, while also discussing the elements necessary for an effective labor standards enforcement system and why labor standards enforcement should become a pillar of immigration policymaking. Full Article
s Immigrants in a Changing Labor Market: Responding to Economic Needs By www.migrationpolicy.org Published On :: Fri, 01 Mar 2013 00:00:00 -0500 This volume, which brings together research by leading economists and labor market specialists, examines the role immigrants play in the U.S. workforce, how they fare in good and bad economic times, and the effects they have on native-born workers and the labor sectors in which they are engaged. The book traces the powerful economic forces at play in today’s globalized world and includes policy prescriptions for making the American immigration system more responsive to labor market needs. Full Article
s Investing Wisely in the Future: How the U.S. Immigration System Can Better Meet U.S. Labor Market Needs By www.migrationpolicy.org Published On :: Wed, 27 Mar 2013 00:00:00 -0400 With the prospects for immigration reform greater than they have been in more than a decade and the U.S. economy slowly shrugging off the effects of the recession, the United States may be on the cusp of historic changes that make the immigration system a more effective tool for innovation, economic growth and the competitiveness of its firms—large and small. Full Article
s Investing Wisely in the Future: How the U.S. Immigration System Can Better Meet U.S. Labor Market Needs By www.migrationpolicy.org Published On :: Wed, 27 Mar 2013 13:30:00 -0400 The release of MPI's book Immigrants in a Changing Labor Market and discussion with Jason Furman, Assistant to the President for Economic Policy and Principal Deputy Director of the National Economic Council; Harry Holzer, Georgetown University Professor of Public Policy; and MPI's Demetrios G. Papademetriou, Madeleine Sumption, and Michael Fix. Full Article
s Legal Immigration Policies for Low-Skilled Foreign Workers By www.migrationpolicy.org Published On :: Mon, 01 Apr 2013 00:00:00 -0400 The current U.S. legal immigration system includes few visas for low-skilled workers, and employers have relied heavily on an unauthorized workforce in many low-skilled occupations. This issue brief explains the questions that policymakers must grapple with when designing programs for admission of low-skill workers, for temporary as well as permanent entry. The brief focuses in part on the recent agreement by the U.S. Chamber of Commerce and AFL-CIO regarding admission of future low-skilled workers. Full Article
s Immigration and U.S. Economic Competitiveness: A View from the Midwest By www.migrationpolicy.org Published On :: Tue, 16 Jul 2013 00:00:00 -0400 At this release event in Washington, DC, co-sponsored by MPI, the Chicago Council on Global Affairs, and ImmigrationWorks USA, the Chicago Council's independent task force on immigration released its report, U.S. Economic Competitiveness at Risk: A Midwest Call to Action on Immigration Reform. Full Article
s Migration and the Great Recession: A Keynote Lecture By www.migrationpolicy.org Published On :: Tue, 25 Mar 2014 10:40:18 -0400 This German Historical Institute keynote lecture, organized together with the Migration Policy Institute, is part of the conference Migration during Economic Downturns—from the Great Depression to the Great Recession. The event will begin with a reception. Full Article
s Grid cells come into play when the imagination runs away By www.theguardian.com Published On :: 2016-03-10T17:15:09Z New research suggests that neurons which track our movements are also involved in imaginary navigationBrain cells involved in spatial navigation and mapping the environment also fire when we merely imagine moving through familiar surroundings, according to a new study by researchers at University College London. The research, published today in the journal Current Biology, shows that memory and imagination are intimately linked in the brain at the cellular level, and could help to explain some of the changes that occur in the early stages of Alzheimer’s Disease. Related: The fly's neural compass works just like a mammal's Related: 3D compass cells found in the bat brain Continue reading... Full Article Science Neuroscience
s A neural pathway that erases memories By www.theguardian.com Published On :: 2016-03-18T13:00:42Z The discovery of an inhibitory memory circuit could lead to novel treatments for conditions such as PTSDIn order to remember, we must forget. Recent research shows that when your brain retrieves newly encoded information, it suppresses older related information so that it does not interfere with the process of recall. Now a team of European researchers has identified a neural pathway that induces forgetting by actively erasing memories. The findings could eventually lead to novel treatments for conditions such as post-traumatic stress disorder (PTSD). We’ve known since the early 1950s that a brain structure called the hippocampus is critical for memory formation and retrieval, and subsequent work using modern techniques has revealed a great deal of information about the underlying cellular mechanisms. The hippocampus contains neural circuits that loop through three of its sub-regions – the dentate gyrus and the CA3 and CA1 areas – and it’s widely believed that memories form by the strengthening and weakening of synaptic connections within these circuits. Related: Light switches memories on and off | Mo Costandi Related: The Homer Simpson effect: forgetting to remember Continue reading... Full Article Science Neuroscience
s Genetically engineered 'Magneto' protein remotely controls brain and behaviour By www.theguardian.com Published On :: 2016-03-24T14:30:03Z “Badass” new method uses a magnetised protein to activate brain cells rapidly, reversibly, and non-invasivelyResearchers in the United States have developed a new method for controlling the brain circuits associated with complex animal behaviours, using genetic engineering to create a magnetised protein that activates specific groups of nerve cells from a distance.Understanding how the brain generates behaviour is one of the ultimate goals of neuroscience – and one of its most difficult questions. In recent years, researchers have developed a number of methods that enable them to remotely control specified groups of neurons and to probe the workings of neuronal circuits. Related: Remote control of brain activity with heated nanoparticles Related: Researchers read and write brain activity with light Continue reading... Full Article Science Neuroscience
s Nerve terminal nanofilaments control brain signalling By www.theguardian.com Published On :: 2016-04-02T13:25:02Z State-of-the-art electron microscopy reveals the large-scale organization of the proteins that regulate neurotransmitter release This spectacular image – which took the best part of a year to create – shows the fine structure of a nerve terminal at high resolution, revealing, for the very first time, an intricate network of fine filaments that controls the movements of synaptic vesicles.The brain is soft and wet, with the consistency of a lump of jelly. Yet, it is the most complex and highly organized structure that we know of, containing hundreds of billions of neurons and glial cells, and something on the order of one quadrillion synaptic connections, all of which are arranged in a very specific manner. Related: 3D model of a nerve terminal in atomic detail | Mo Costandi Related: Blowing up the brain to reveal its finer details Continue reading... Full Article Science Neuroscience
s Gut bacteria regulate nerve fibre insulation By www.theguardian.com Published On :: 2016-04-05T14:00:01Z Research suggests that gut bacteria may directly affect brain structure and function, offering new ways to treat multiple sclerosis and psychiatric conditions Far from being silent partners that merely help to digest food, the bacteria in your gut may also be exerting subtle influences on your thoughts, moods, and behaviour. And according to a new study from researchers at University College Cork, your gut microbes might affect the structure and function of the brain in a more direct way, by regulating myelination, the process by which nerve fibres are insulated so that they can conduct impulses properly.The surprising new findings, published today in the journal Translational Psychiatry, provide what is perhaps the strongest evidence yet that gut bacteria can have a direct physical effect on the brain, and suggest that it may one day be possible to treat debilitating demyelinating diseases such as multiple sclerosis, and even psychiatric disorders, by altering the composition of the gut’s microbial menagerie in some way or another. Related: Brain’s immune cells hyperactive in schizophrenia Related: White matter might matter much more than we thought | Mo Costandi Continue reading... Full Article Science Neuroscience
s How the Zika virus causes birth defects By www.theguardian.com Published On :: 2016-05-11T17:00:04Z New research provides the first direct evidence that Zika virus causes severe birth defects, and explains exactly how it does so“I lifted up my T-shirt to check on what I thought had just been a small heat rash,” writes BuzzFeed correspondent Ali Watkins. “It had shown up along the right of my back, extending out from a handful of mosquito bites I had picked up… it had seemed relatively tame [but] now, it was inching across the front of my stomach and down my legs... Meanwhile, my right eye was inflamed and bright red, almost akin to a busted blood vessel.”Watkins is describing the symptoms of a Zika virus infection that she contracted on a recent trip to Mexico. For many people, infection with this mosquito-borne virus causes an illness with symptoms just like those experienced by Watkins: fever, skin rash, joint pain and conjunctivitis. For others, these symptoms are so mild that they go completely unnoticed. Related: Zika virus spreads across Americas - in pictures Related: Zika forest: birthplace of virus that has spread fear across the world Continue reading... Full Article Zika virus Science Neuroscience
s Bumblebee’s electric field sensor identified By www.theguardian.com Published On :: 2016-05-31T10:30:02Z Mechanosensory hairs covering bumblebees’ bodies detect the small electrical fields emitted by flowersBumblebees use the fine hairs covering their bodies to detect electrical fields produced by the flowers they feed on and pollinate, according to a new study by researchers at the University of Bristol. The findings, just published in Proceedings of the National Academy of Sciences, may help to solve the mystery of how insects and other terrestrial creatures detect and respond to electric fields.It’s well known that bumblebees use their sense of smell, as well as visual cues such as the colour, shape, and patterning of flowers, to find nectar, and in 2013, biologist Daniel Robert and his colleagues reported the surprising finding that they can also detect floral electric fields. Related: Electric eels curl up to deliver double strength shocks Related: Ancient arthropod brains surprise paleontologists Continue reading... Full Article Science Neuroscience
s Tarantula toxin untangles pain pathways By www.theguardian.com Published On :: 2016-06-06T15:00:03Z A toxin isolated from the Togo starburst tarantula provides new insights into pain mechanisms and could lead to new treatments for irritable bowel syndromeWith their large, hairy bodies and long legs, tarantulas are an arachnophobe’s worst nightmare. For pain researchers, however, these outsized spiders are a dream come true: Their venom contains a cocktail of toxins, each of which activates pain-sensing nerve fibres in different ways, and researchers in the United States have now identified one such toxin that will help them to better understand pain, and could also lead to treatments for the chronic pain associated with irritable bowel syndrome. Physical pain signals are transmitted from the body to the brain by specialised sensory neurons called nociceptors. These pain-sensing neurons have cell bodies located just outside the spinal cord, and possess a single conductive fibre that splits in two, with one branch extending out towards the skin surface, and the shorter one entering the back of the cord. Related: Uncomfortably numb: The people who feel no pain Related: Researchers identify gatekeeper neurons that control pain and itch Continue reading... Full Article Science Neuroscience
s Birds pack more cells into their brains than mammals By www.theguardian.com Published On :: 2016-06-15T10:00:06Z New research reveals the secret behind the remarkable intelligence of some bird species Related: Blind cave fish evolved a shrunken brain to save energy Calling someone “bird brain” used to be considered as an insult. Birds’ brains are very small compared to those of mammals, and what’s more, they lack the heavily wrinkled cerebral cortex, which is characteristic of the human brain, and widely believed to the seat of intelligence. It was, therefore, widely assumed that birds aren’t very clever creatures, but recently this has started to change. Related: Ravens cooperate with friends not foes Continue reading... Full Article Science Neuroscience
s Barack Obama Blindness: Failing to see the unexpected By www.theguardian.com Published On :: 2016-06-30T11:30:29Z New research demonstrates an extreme form of inattentional blindness in which we fail to see the unexpectedThere’s much more to visual perception than meets the eye. What we see is not merely a matter of patterns of light falling on the retina, but rather is heavily influenced by so-called ‘top-down’ brain mechanisms, which can alter the visual information, and other types of sensory information, that enters the brain before it even reaches our conscious awareness. Related: Memory contaminates perception | Mo Costandi Related: Language boosts invisible objects into visual awareness | Mo Costandi Continue reading... Full Article Science Neuroscience
s Frigatebirds sleep in mid-flight By www.theguardian.com Published On :: 2016-08-05T15:00:07Z New research shows that frigatebirds can sleep on the wing, with just one or both halves of their brainWhen Charles Darwin arrived at the Galápagos Islands in 1839, he had the opportunity to observe the habits of frigatebirds, and marvelled at their graceful flight manoeuvres and their ability to soar up high. “When it sees any object on the surface of the water,” he wrote, “[it] descends from a great height… with the swiftness of an arrow; and at the instant of seizing with its long beak and outstretched neck, the floating morsel, it turns upwards, with extraordinary dexterity, by the aid of its forked tail, and its long, powerful wings.” Related: Sleepy brains neglect half the world | Mo Costandi Related: Birds pack more cells into their brains than mammals Continue reading... Full Article Science Neuroscience
s Live imaging of synapse density in the human brain By www.theguardian.com Published On :: 2016-08-10T12:00:55Z A new imaging technique may give researchers fresh insights into brain development, function, and diseaseThe human brain is often said to be the most complex object in the known universe, and there’s good reason to believe that it is. That lump of jelly inside your head contains at least 80 billion nerve cells, or neurons, and even more of the non-neuronal cells called glia. Between them, they form hundreds of trillions of precise synaptic connections; but they all have moveable parts, and these connections can change. Neurons can extend and retract their delicate fibres; some types of glial cells can crawl through the brain; and neurons and glia routinely work together to create new connections and eliminate old ones.These processes begin before we are born, and occur until we die, making the brain a highly dynamic organ that undergoes continuous change throughout life. At any given moment, many millions of them are being modified in one way or another, to reshape the brain’s circuitry in response to our daily experiences. Researchers at Yale University have now developed an imaging technique that enables them to visualise the density of synapses in the living human brain, and offers a promising new way of studying how the organ develops and functions, and also how it deteriorates in various neurological and psychiatric conditions. Related: Brain’s immune cells hyperactive in schizophrenia Related: 3D model of a nerve terminal in atomic detail | Mo Costandi Continue reading... Full Article Science Neuroscience
s Cannabis may enhance night vision By www.theguardian.com Published On :: 2016-10-27T14:30:24Z New research shows that the drug makes cells in the retina more sensitive to light25 years ago, pharmacologist M. E. West of the University of the West Indies in Kingston, Jamaica, noted that local fisherman who smoke cannabis or drink rum made with the leaves and stems of the plant had “an uncanny ability to see in the dark,” which enabled them to navigate their boats through coral reefs. “It was impossible to believe that anyone could navigate a boat without compass and without light in such treacherous surroundings,” he wrote after accompanying the crew of a fishing boat one dark night, “[but] I was then convinced that the man who had taken the rum extract of cannabis had far better night vision than I had, and that a subjective effect was not responsible.”Some of these crew members told West that Moroccan fishermen and mountain dwellers experience a similar improvement after smoking hashish, and in 2002, another research team travelled to the Rif mountains in Morocco to investigate further. They gave a synthetic cannabinoid to one volunteer, and hashish to three more, then used a newly developed piece of kit to measure the sensitivity of their night vision before and after. Confirming West’s earlier report, they found that cannabis improved night vision in all three of their test subjects. Related: How marijuana impairs memory Related: A brief history of psychedelic psychiatry | Mo Costandi Continue reading... Full Article Science Neuroscience
s Stem cells from schizophrenics produce fewer neurons By www.theguardian.com Published On :: 2016-11-01T15:15:10Z New research shows that a genetic mutation associated with schizophrenia alters the process of cellular differentiation, disturbing the balance of neurons and glia in the brain Stem cells obtained from patients with schizophrenia carry a genetic mutation that alters the ratio of the different type of nerve cells they produce, according to a new study by researchers in Japan. The findings, published today in the journal Translational Psychiatry, suggest that abnormal neural differentiation may contribute to the disease, such that fewer neurons and more non-neuronal cells are generated during the earliest stages of brain development. Schizophrenia is a debilitating mental illness that affects about 1 in 100 people. It is known to be highly heritable, but is genetically complex: so far, researchers have identified over 100 rare genetic variations and dozens of mutations associated with increased risk of developing the disease. Related: Brain’s immune cells hyperactive in schizophrenia Related: Turning urine into brain cells | Mo Costandi Continue reading... Full Article Science Neuroscience
s Obesity alters brain structure and function By www.theguardian.com Published On :: 2016-11-23T18:30:50Z It’s not just your waistline that suffers as you put on weight. Researchers are beginning to find puzzling new links between obesity, memory loss and dementiaLucy Cheke and her colleagues at the University of Cambridge recently invited a few participants into her lab for a kind of ‘treasure hunt’.The participants navigated a virtual environment on a computer screen, dropping off various objects along their way. They then answered a series of questions to test their memory of the task, such as where they had hidden a particular object. Related: How your eyes betray your thoughts Related: How to optimise your brain's waste disposal system Related: Gut bacteria regulate nerve fibre insulation Related: Obesity linked to memory deficits Continue reading... Full Article Science Neuroscience
s Breathing modulates brain activity and mental function By www.theguardian.com Published On :: 2016-12-23T10:30:13Z New research shows that the rhythm of breathing directly impacts neural activity in a network of brain areas involved in smell, memory and emotionsThe rhythm of breathing co-ordinates electrical activity across a network of brain regions associated with smell, memory, and emotions, and can enhance their functioning, according to a new study by researchers at Northwestern University. The findings, published in the Journal of Neuroscience, suggest that breathing does not merely supply oxygen to the brain and body, but may also organise the activity of populations of cells within multiple brain regions to help orchestrate complex behaviours. Related: Your nose knows death is imminent | Mo Costandi Related: A cooler way to evaluate brain surgery patients Continue reading... Full Article Science Neuroscience