Cognitive radio is a promising technology to improve spectral efficiency. However, the secure performance of a secondary network achieved by using physical layer security techniques is limited by its transmit power and channel fading. In order to tackle this issue, a cognitive unmanned aerial vehicle (UAV) communication network is studied by exploiting the high flexibility of a UAV and the possibility of establishing line-of-sight links. The average secrecy rate of the secondary network is maximized by robustly optimizing the UAV's trajectory and transmit power. Our problem formulation takes into account two practical inaccurate location estimation cases, namely, the worst case and the outage-constrained case. In order to solve those challenging non-convex problems, an iterative algorithm based on $mathcal{S}$-Procedure is proposed for the worst case while an iterative algorithm based on Bernstein-type inequalities is proposed for the outage-constrained case. The proposed algorithms can obtain effective suboptimal solutions of the corresponding problems. Our simulation results demonstrate that the algorithm under the outage-constrained case can achieve a higher average secrecy rate with a low computational complexity compared to that of the algorithm under the worst case. Moreover, the proposed schemes can improve the secure communication performance significantly compared to other benchmark schemes.

A cognitive disorder diagnostic system that employs cognitive cubes, gameplay associate with the cognitive cubes, and a data gathering as statistical analysis base device that may be a computer, that communicates the gathered data to a web server host according to a unique ID associated with particular cognitive cubes and further associated with a particular player. Using the statistical data gathered using the gameplay, various cognitive disorders may be successfully diagnosed and treated with higher reliability.

The present invention provides method and apparatus to perform combined cognitive and motor rehabilitation on a computerized non-portable system or on single portable device. A patient can play a variety of games that require the patient to perform a variety of memory exercises which involve physical exertion. The activities of the patient are monitored with pattern analysis software which provides feedback to the patient. The feedback can include voice synthesis, video guidance, progression messages etc. Patient data obtained while the patient is performing each of the memory exercises is stored locally on a database module and then uploaded to a cloud server. A remote psychologist/psychiatrist monitors the patient by logging into the same cloud, and updating cognition exercises. The same therapist can have live chats with the patient for further interaction and coaching.

Learn how to integrate IT service management with AI services on an IoT device. You'll build a cognitive alert system for your IT operations.

Wow! Noise is a secret killer of performance. A 10db noise increase (from a dishwasher to a vacuum) drops productivity by 5% - but most people don't notice since it impacts cognition, not effort. Also, note that noise is greater in poorer neighborhoods...

IBM Research today opened its second research location on the African continent and announced several new project collaborations in the areas of data driven healthcare, digital urban ecosystems and astronomy.

IBM today announced a significant new release of its PowerAI deep learning software distribution on Power Systems that attacks the major challenges facing data scientists and developers by simplifying the development experience with tools and data preparation while also dramatically reducing the time required for AI system training from weeks to hours.

IBM and Nutanix today announced a multi-year initiative to bring new workloads to hyperconverged deployments.

While marketing and sales professionals increasingly find themselves drowning in data, a new IBM study finds that nearly two thirds—64 percent--of surveyed CMOs and sales leaders believe their industries will be ready to adopt cognitive technologies in the next three years. However despite this stated readiness, the study finds that only 24 percent of those surveyed believe they have strategy in place to implement these technologies today.

Watson matched tumor board treatment recommendations in up to 96% of cases;reduced clinical trial screening time by 78%, studies find. Prostate cancer is latest add to Watson for Oncology; the tech will be available to support 80 percent of the incidence of cancer by year-end. Nine new adopters of Watson oncology offerings around the globe expands Watson's reach to 55 organizations worldwide.

Humans are guilty of having less than rational thoughts. We do it all the time. We might assume the worst is going to happen or jump to conclusions before we have all the information. Cognitive restructuring helps people become aware of their irrational thoughts so that they can correct them and replace them with more [...]Read More...

John Zrebiec
Oct 1, 2006; 19:212-215
Clinical Decision Making

Background: Functional magnetic resonance imaging (fMRI) studies have reported altered integrity of large-scale neurocognitive networks (NCNs) in dementing disorders. However, findings on specificity of these alterations in patients with Alzheimer’s disease (AD) and behavioral variant frontotemporal dementia (bvFTD) are still very limited. Recently, NCNs have been successfully captured using positron emission tomography (PET) with F18-fluordesoxyglucose (FDG). Methods: Network integrity was measured in 72 individuals (38 male) with mild AD, bvFTD, and healthy controls using a simultaneous resting state fMRI and FDG-PET. Indices of network integrity were calculated for each subject, network, and imaging modality. Results: In either modality, independent component analysis revealed four major NCNs: anterior default mode network (DMN), posterior DMN, salience network, and right central executive network (CEN). In fMRI data, integrity of posterior DMN was found to be significantly reduced in both patient groups relative to controls. In the AD group anterior DMN and CEN appeared to be additionally affected. In PET data, only integrity of posterior DMN in patients with AD was reduced, while three remaining networks appeared to be affected only in patients with bvFTD. In a logistic regression analysis, integrity of anterior DMN as measured with PET alone accurately differentiated between the patient groups. A correlation between indices of two imaging modalities was overall low. Conclusion: FMRI and FDG-PET capture partly different aspects of network integrity. A higher disease specificity of NCNs as derived from PET data supports metabolic connectivity imaging as a promising diagnostic tool.

Previous studies show that 12-week of high-fat diet (HFD) consumption caused not only prediabetes, but also cognitive decline and brain pathologies. Recently, necrostatin-1 (nec-1), a necroptosis inhibitor, showed beneficial effects in brain against stroke. However, the comparative effects of nec-1 and metformin on cognition and brain pathologies in prediabetes have not been investigated. We hypothesized that nec-1 and metformin equally attenuated cognitive decline and brain pathologies in prediabetic rats. Rats (n=32) were fed with either normal diet (ND) or high-fat diet (HFD) for 20 weeks. At week 13, ND-fed rats were given a vehicle (n=8) and HFD-fed rats were randomly assigned into 3 subgroups (n=8/subgroup) with vehicle, nec-1 or metformin for 8 weeks. Metabolic parameters, cognitive function, brain insulin receptor function, synaptic plasticity, dendritic spine density, microglial morphology, brain mitochondrial function, Alzheimer’s protein, and cell death were determined. HFD-fed rats exhibited prediabetes, cognitive decline, and brain pathologies. Nec-1 and metformin equally improved cognitive function, synaptic plasticity, dendritic spine density, microglial morphology, brain mitochondrial function, reduced hyperphosphorylated-tau and necroptosis in HFD-fed rats. Interestingly metformin, but not nec-1, improved brain insulin sensitivity in those rats. In conclusion, necroptosis inhibition directly improved cognition in prediabetic rats without alteration in insulin sensitivity.

The present study examined the predictive values of amyloid PET, ¹⁸F-FDG PET, and nonimaging predictors (alone and in combination) for development of Alzheimer dementia (AD) in a large population of patients with mild cognitive impairment (MCI). Methods: The study included 319 patients with MCI from the Alzheimer Disease Neuroimaging Initiative database. In a derivation dataset (n = 159), the following Cox proportional-hazards models were constructed, each adjusted for age and sex: amyloid PET using ¹⁸F-florbetapir (pattern expression score of an amyloid-β AD conversion–related pattern, constructed by principle-components analysis); ¹⁸F-FDG PET (pattern expression score of a previously defined ¹⁸F-FDG–based AD conversion–related pattern, constructed by principle-components analysis); nonimaging (functional activities questionnaire, apolipoprotein E, and mini-mental state examination score); ¹⁸F-FDG PET + amyloid PET; amyloid PET + nonimaging; ¹⁸F-FDG PET + nonimaging; and amyloid PET + ¹⁸F-FDG PET + nonimaging. In a second step, the results of Cox regressions were applied to a validation dataset (n = 160) to stratify subjects according to the predicted conversion risk. Results: On the basis of the independent validation dataset, the ¹⁸F-FDG PET model yielded a significantly higher predictive value than the amyloid PET model. However, both were inferior to the nonimaging model and were significantly improved by the addition of nonimaging variables. The best prediction accuracy was reached by combining ¹⁸F-FDG PET, amyloid PET, and nonimaging variables. The combined model yielded 5-y free-of-conversion rates of 100%, 64%, and 24% for the low-, medium- and high-risk groups, respectively. Conclusion: ¹⁸F-FDG PET, amyloid PET, and nonimaging variables represent complementary predictors of conversion from MCI to AD. Especially in combination, they enable an accurate stratification of patients according to their conversion risks, which is of great interest for patient care and clinical trials.

OBJECTIVE

In children with type 1 diabetes (T1D), severe hypoglycemia (SH) is associated with poorer cognition, but the association of SH with cognitive function in late life is unknown. Given the increasing life expectancy in people with T1D, understanding the role of SH in brain health is crucial.

The National Academies of Sciences, Engineering, and Medicine announced March 5 that it does not find that the National Toxicology Program adequately supported its conclusion that fluoride is “presumed” to be a cognitive neurodevelopmental hazard to humans.

OBJECTIVE

To determine the prevalence of cognitive deficits and traditional diabetic complications and the association between metabolic factors and these outcomes.

Understand how customer brains work - these are the most important cognitive biases for e-commerce marketers.

The post 12 Cognitive Biases E-commerce Marketers Need to Know appeared first on Neuromarketing.

Two articles in the most recent issue of Theory & Psychology may interest AHP readers. Full details below. “How lost and accomplished revolutions shaped psychology: Early Critical Theory (Frankfurt School), Wilhelm Reich, and Vygotsky,” by Gordana Jovanovi?. Abstract: On the occasion of recent centenaries of revolutions in Europe (1917, 1918–19), this article examines, within a … Continue reading New Theory & Psychology: Early Critical Theory and Beck’s Cognitive Theory →

Elisa Filevich
Jan 21, 2015; 35:1082-1088
BehavioralSystemsCognitive

Mathieu Wolff
Jan 2, 2019; 39:3-14
Viewpoints

Christina Zelano
Dec 7, 2016; 36:12448-12467
Systems/Circuits

Masaki Yamamoto
May 22, 2019; 39:4179-4192
Neurobiology of Disease

Investment of cognitive effort is required in everyday life and has received ample attention in recent neurocognitive frameworks. The neural mechanism of effort investment is thought to be structured hierarchically, with dorsal anterior cingulate cortex (dACC) at the highest level, recruiting task-specific upstream areas. In the current fMRI study, we tested whether dACC is generally active when effort demand is high across tasks with different stimuli, and whether connectivity between dACC and task-specific areas is increased depending on the task requirements and effort level at hand. For that purpose, a perceptual detection task was administered that required male and female human participants to detect either a face or a house in a noisy image. Effort demand was manipulated by adding little (low effort) or much (high effort) noise to the images. Results showed a network of dACC, anterior insula (AI), and intraparietal sulcus (IPS) to be more active when effort demand was high, independent of the performed task (face or house detection). Importantly, effort demand modulated functional connectivity between dACC and face-responsive or house-responsive perceptual areas, depending on the task at hand. This shows that dACC, AI, and IPS constitute a general effort-responsive network and suggests that the neural implementation of cognitive effort involves dACC-initiated sensitization of task-relevant areas.

SIGNIFICANCE STATEMENT Although cognitive effort is generally perceived as aversive, its investment is inevitable when navigating an increasingly complex society. In this study, we demonstrate how the human brain tailors the implementation of effort to the requirements of the task at hand. We show increased effort-related activity in a network of brain areas consisting of dorsal anterior cingulate cortex (dACC), anterior insula, and intraparietal sulcus, independent of task specifics. Crucially, we also show that effort-induced functional connectivity between dACC and task-relevant areas tracks specific task demands. These results demonstrate how brain regions specialized to solve a task may be energized by dACC when effort demand is high.

Neurocognitive testing is recommended for the assessment of sport-related concussions. Computerized neurocognitive tests are more sensitive and more efficient than traditional neuropsychological testing in assessing sport-related concussions.

We describe the current prevalence of computerized neurocognitive testing, the relative use of the various computerized programs, the types of clinicians interpreting test scores, and associations of computerized tests with timing of return-to-play and medical provider type managing the athlete. (Read the full article)

Previous research has demonstrated that young children with traumatic brain injury are at elevated risk of poor outcomes, particularly following severe injuries. These deficits persist until at least 5 years postinsult. Factors predicting outcomes in this age group have not been established.

This study follows survivors of very early traumatic brain injury into adolescence. Results indicate that severe injury is associated with poorest outcome, but after 3 years, the gap between children with severe traumatic brain injury and peers stabilizes. (Read the full article)

Among extremely premature infants, survival has improved, but the rate of cognitive impairment has not. Impaired cognition is the most frequent developmental problem identified in survivors. Several antenatal factors have been associated with cognitive impairment, mostly related to social disadvantage.

In addition to social disadvantage, antenatal characteristics associated with cognitive impairment include maternal obesity and thrombosis of fetal stem vessels. Prenatal infection and inflammation were not associated with impaired early cognitive function among extremely preterm infants. (Read the full article)

Vitamin D levels in the general population have decreased considerably over the past decade. The implications of maternal vitamin D insufficiency during pregnancy for offspring neurocognitive development remain unclear.

Studying a large sample and using a prospective longitudinal design, this study demonstrates a link between maternal vitamin D insufficiency during pregnancy and offspring language impairment. There was no association with childhood behavioral or emotional problems. (Read the full article)

Very preterm children are at risk for developmental problems and, therefore, a systematic follow-up is important. However, the relevance of early follow-up of cognitive development has been questioned because of the divergent data on the prognostic value of early measures.

Good stability of cognitive development was found between the ages of 2 and 5 years. Well-conducted assessment of cognitive development in infancy is both reliable to anticipate later development and clinically valuable to identify those children who need developmental support. (Read the full article)

Cross-sectional studies have demonstrated associations between the white matter injury and cognitive impairment in very preterm born children. Longitudinal studies confirmed the relationships between cerebral MRI at term and neurodevelopmental outcomes at up to 2 years old.

White matter injury (but not gray matter injury) on term MRI predicted cognitive impairments of very preterm born infants at 9 years old. Qualitative assessment of white matter signal intensities showed limited predictive values of cognitive impairments. (Read the full article)

Isolated methylmalonic acidemia, one of the most common inborn errors of organic acid metabolism, is known to be associated with variably impaired intellectual functioning and severe biochemical and clinical abnormalities. However, the neurocognitive outcomes have yet to be fully described.

This research defines the neurocognitive phenotype of isolated methylmalonic acidemia and identifies processing speed as a specific impairment. Clinical, biochemical, and molecular genetic covariates were explored. A history of hyperammonemia at diagnosis was found to correlate with poorer cognitive outcomes. (Read the full article)

Computerized provider order entry (CPOE) has been recognized to enhance the efficiency, safety, and quality of medical work. Yet vendors and organizations have not determined best practices for customizations, resulting in systems that have poor usability and unintended consequences of use.

This study demonstrated that systematically developed order sets reduce cognitive workload and order variation in the context of improved system usability and guideline adherence. The concept of cognitive workload reduction is novel in the setting of computer order entry. (Read the full article)

Immature animals exposed to anesthetics display apoptotic neurodegeneration and long-term cognitive deficiencies. In children, studies of cognitive deficits associated with anesthesia exposure have yielded mixed results. No studies to date have used directly administered neuropsychological assessments as outcome measures.

This study examines the association between exposure to anesthesia in children under age 3 and deficits at age 10 by using a battery of directly administered neuropsychological assessments, with deficits found in language and abstract reasoning associated with exposure. (Read the full article)

Preterm born children have cognitive problems that include deficits in working memory. Computer-based working memory training has been reported to improve cognitive function in children.

A computer-based working memory training program designed for preschoolers seems effective in very low birth weight children, not only on working memory tasks, but also by having a generalizing effect regarding memory and learning. (Read the full article)

Pediatric functional abdominal pain is common and costly. Cognitive behavior therapy (CBT) is a promising treatment for these complaints, but solid evidence for its effectiveness is lacking.

This randomized controlled trial shows that CBT reduces abdominal pain in 60% of children 1 year after treatment. Six sessions of CBT delivered by trained master’s students in psychology were equally effective as 6 visits to an experienced pediatrician. (Read the full article)

Better postnatal growth, especially head growth, associates with better cognitive development in preterm infants. Suboptimal postnatal growth is more common in infants with poor antenatal growth than in infants with normal growth.

Good weight gain and head circumference growth until 2 years was associated with better 5-year cognitive outcome in non–small for gestational age infants. Good head circumference growth around term age benefits the cognitive outcome of small for gestational age infants. (Read the full article)

Cognitive rest is recommended for the management of sport-related concussions. There are limited data to support this recommendation.

This study adds empirical data supporting the recommendation for cognitive rest after a sport-related concussion. (Read the full article)

Sibship size has been negatively associated with children’s language, cognitive, and academic outcomes. This phenomenon is often explained in terms of resource dilution, wherein more children in the home is associated with fewer parental resources allocated to each child.

The current study identifies a moderator of this relationship. Specifically, if children’s next-in-age older siblings exhibit high levels of cognitive sensitivity then sibship size is not significantly related to children’s vocabulary. (Read the full article)

Greater numbers of invasive procedures from birth to term-equivalent age, adjusted for clinical confounders, are associated with altered brain microstructure during neonatal care and poorer cognitive outcome at 18 months’ corrected age in children born very preterm.

Altered myelination at school age is associated with greater numbers of invasive procedures during hospitalization in very preterm children without severe brain injury or neurosensory impairment. Greater numbers of invasive procedures and altered brain microstructure interact to predict lower IQ. (Read the full article)

Encephalitis in children can cause significant neurologic sequelae, such as motor and cognitive impairment. Previous reported data are based mostly on questionnaires and clinical assessments.

Significant cognitive impairment, attention-deficit/hyperactivity disorder, and learning disabilities are common after childhood encephalitis. Even children who were considered fully recovered may be significantly affected. Identifiable pathogens, abnormal neuroimaging, and abnormal neurologic examination on discharge are risk factors of poor outcome. (Read the full article)

Although a number of randomized controlled trials of erythropoietin administration to preterm infants have been performed, few studies have reported 2-year or longer neurodevelopmental outcomes, and no studies have evaluated neurodevelopmental outcomes of infants randomized to receive Darbepoetin.

This is the first prospectively designed study to evaluate the neurocognitive outcomes of preterm infants randomized to receive Darbepoetin or erythropoietin compared with placebo. Infants in the ESA groups had significantly higher cognitive scores compared with the placebo group. (Read the full article)

Neurocognitive deficits, academic delays, and behavioral and emotional problems are well documented in school-age children in relation to socioeconomic disadvantage and residential instability. Despite adversity, early intervention can facilitate healthy cognitive, emotional, and social development.

Homeless youth demonstrated elevated rates of untreated psychiatric disorders, low academic achievement, and impaired neurocognition. Mental health and neurocognitive symptoms were associated with vocational outcome. Intervention beyond employment services alone is needed to improve functioning. (Read the full article)

Children with cognitive delay have been shown to have more behavior problems than typically developing children; however, few studies have investigated this relationship over time or among very young children.

Our findings provide some of the first national, prospective evidence that having a cognitive delay may place children at risk for developing and maintaining behavior problems before school age. Early identification and intervention may improve outcomes for these children. (Read the full article)

More than 200 million children <5 years old in low- and middle-income countries are not reaching their potential in cognitive development because of factors associated with poverty.

Poverty affects children’s cognition as early as 7 months and continues to increase until 5 years of age. It is mainly mediated by parental education, birth weight, home stimulation throughout the 5 years, and growth in the first 24 months. (Read the full article)

Exclusive breastfeeding until 6 months of an infant’s age is described as the safest, most powerful and cost-effective intervention to reduce infant morbidity and mortality globally. In developing countries, only ~25% of infants are exclusively breastfed for 6 months.

We developed a psycho-educational intervention combining education with techniques of cognitive-behavioral therapy, integrated it into the routine work of community health workers, which increased the rate and duration of exclusive breastfeeding until 6 months of an infant’s age. (Read the full article)

Previous research has established steep socioeconomic status gradients in children’s cognitive ability at kindergarten entry. Few studies have had comprehensive data to examine the contribution of a wide range of risk and protective factors across early childhood to these gradients.

Family background, health, home learning, parenting, and early care and education factors explain over half the gaps in reading and math ability between US children in the lowest versus highest socioeconomic status quintiles, suggesting a need for comprehensive early interventions. (Read the full article)

Surviving infants with neonatal encephalopathy treated with hypothermia have lower rates of moderate to severe cerebral palsy and cognitive impairment at 18 to 24 months. Limited data exist on the association between cognitive functioning and neuromotor, behavioral, and school outcomes.

Although the incidence of death or IQ <55 is reduced after therapeutic hypothermia, survivors of neonatal encephalopathy with and without cerebral palsy are at elevated risk for subnormal IQ and the need for specialized educational services at 6 to 7 years. (Read the full article)

More than 70% of all preterm deliveries are late preterm (34–36 weeks of gestation). Existing evidence suggests that compared with those born at term, those born late preterm score lower on neurocognitive tests in childhood and young adulthood.

The effect of late preterm birth on neurocognitive performance persists up to late adulthood, especially among those who have only a basic or upper secondary level of education. Late preterm birth is also associated with a risk of memory impairments. (Read the full article)