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https://www.readbyqxmd.com/read/28230528/biologically-plausible-learning-in-recurrent-neural-networks-reproduces-neural-dynamics-observed-during-cognitive-tasks
#1
Thomas Miconi
Neural activity during cognitive tasks exhibits complex dynamics that flexibly encode task-relevant variables. Chaotic recurrent networks, which spontaneously generate rich dynamics, have been proposed as a model of cortical computation during cognitive tasks. However, existing methods for training these networks are either biologically implausible, and/or require a continuous, real-time error signal to guide learning. Here we show that a biologically plausible learning rule can train such recurrent networks, guided solely by delayed, phasic rewards at the end of each trial...
February 23, 2017: ELife
https://www.readbyqxmd.com/read/28229986/executive-function-training-for-children-with-attention-deficit-hyperactivity-disorder
#2
Lan Shuai, David Daley, Yu-Feng Wang, Jin-Song Zhang, Yan-Ting Kong, Xin Tan, Ning Ji
BACKGROUND: Accumulating evidence indicates that attention deficit hyperactivity disorder (ADHD) is associated with core deficits in executive function (EF) which predicts poorer academic and occupational functioning. This makes early intervention targeting EF impairments important to prevent long-term negative outcomes. Cognitive training is a potential ADHD treatment target. The present study aimed to explore the efficacy, feasibility, and acceptability of a cognitive training program (targeting child's multiple EF components and involving parent support in daily life), as a nonpharmacological intervention for children with ADHD...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28223940/reconsideration-of-serial-visual-reversal-learning-in-octopus-octopus-vulgaris-from-a-methodological-perspective
#3
Alexander Bublitz, Severine R Weinhold, Sophia Strobel, Guido Dehnhardt, Frederike D Hanke
Octopuses (Octopus vulgaris) are generally considered to possess extraordinary cognitive abilities including the ability to successfully perform in a serial reversal learning task. During reversal learning, an animal is presented with a discrimination problem and after reaching a learning criterion, the signs of the stimuli are reversed: the former positive becomes the negative stimulus and vice versa. If an animal improves its performance over reversals, it is ascribed advanced cognitive abilities. Reversal learning has been tested in octopus in a number of studies...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28222075/a-pilot-study-of-a-cognitive-behavioral-intervention-for-breast-cancer-survivors
#4
Heather Becker, Ashley M Henneghan, Deborah L Volker, Sabrina Q Mikan
PURPOSE/OBJECTIVES: To test combining a group intervention to build self-efficacy for using compensatory strategies and lifestyle adjustments with brain-training practice to improve cognition.
. DESIGN: A quasiexperimental design.
. SETTING: Texas Oncology, a community oncology practice in Austin.
. SAMPLE: 20 women aged 35-65 years, who had finished chemotherapy at least three months before the study, were within five years of completing all treatment, and had self-reported cognitive concerns...
March 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28221082/partial-lesion-of-the-nigrostriatal-dopamine-pathway-in-rats-impairs-egocentric-learning-but-not-spatial-learning-or-behavioral-flexibility
#5
Katharine M Seip-Cammack, James J Young, Megan E Young, Matthew L Shapiro
Degeneration of the nigrostriatal dopaminergic system in Parkinson's disease (PD) causes motor dysfunction and cognitive impairment, but the etiology of the cognitive deficits remains unclear. The present study investigated the behavioral effects of partial lesions of the nigrostriatal dopamine (DA) pathway. Rats received bilateral infusions of either 6-hydroxydopamine (6-OHDA) or vehicle into the dorsolateral striatum and were tested in spatial and procedural learning tasks. Compared with intact rats, DA-depleted rats were impaired when the first task they learned required egocentric responses...
February 20, 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28220089/emotion-regulation-therapy-a-mechanism-targeted-treatment-for-disorders-of-distress
#6
Megan E Renna, Jean M Quintero, David M Fresco, Douglas S Mennin
"Distress disorders," which include generalized anxiety disorder and major depression are often highly comorbid with each other and appear to be characterized by common temperamental features that reflect heightened sensitivity to underlying motivational systems related to threat/safety and reward/loss. Further, individuals with distress disorders tend to utilize self-referential processes (e.g., worry, rumination, self-criticism) in a maladaptive attempt to respond to motivationally relevant distress, often resulting in suboptimal contextual learning...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28220063/vibrotactile-discrimination-training-affects-brain-connectivity-in-profoundly-deaf-individuals
#7
Andrés A González-Garrido, Vanessa D Ruiz-Stovel, Fabiola R Gómez-Velázquez, Hugo Vélez-Pérez, Rebeca Romo-Vázquez, Ricardo A Salido-Ruiz, Aurora Espinoza-Valdez, Luis R Campos
Early auditory deprivation has serious neurodevelopmental and cognitive repercussions largely derived from impoverished and delayed language acquisition. These conditions may be associated with early changes in brain connectivity. Vibrotactile stimulation is a sensory substitution method that allows perception and discrimination of sound, and even speech. To clarify the efficacy of this approach, a vibrotactile oddball task with 700 and 900 Hz pure-tones as stimuli [counterbalanced as target (T: 20% of the total) and non-target (NT: 80%)] with simultaneous EEG recording was performed by 14 profoundly deaf and 14 normal-hearing (NH) subjects, before and after a short training period (five 1-h sessions; in 2...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28219026/cognitive-remediation-and-social-cognitive-training-for-violence-in-schizophrenia-a-systematic-review
#8
REVIEW
C Darmedru, C Demily, N Franck
: A significant correlation exists between violence and schizophrenia (SCZ). Recent studies matched some cognitive deficits like strong risk factors for violence with interesting applications in terms of treatment. Our objective was to conduct a systematic review of the effectiveness of cognitive remediation (CR) and social cognitive training (SCT) in the management of violent and aggressive behaviors in SCZ. METHODS: The electronic databases Pubmed, Web of Science, Cochrane Library and ScienceDirect were searched in, using combinations of terms relating to SCZ, CR and violence...
February 9, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28217093/mindfulness-training-for-healthy-aging-impact-on-attention-well-being-and-inflammation
#9
REVIEW
Stephanie Fountain-Zaragoza, Ruchika Shaurya Prakash
The growing interest in mindfulness interventions for use in aging samples has been met with promising evidence of cognitive, emotional, and physiological benefits. The purpose of this review is to provide an overview of the impact of mindfulness training on three areas of functioning in older adults: behavioral and neural correlates of attentional performance, psychological well-being, and systemic inflammation. We have previously proposed that mindfulness training is uniquely suited as a rehabilitative tool for conferring both cognitive and emotional benefits for older adults...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28214576/amplified-induced-neural-oscillatory-activity-predicts-musicians-benefits-in-categorical-speech-perception
#10
Gavin M Bidelman
Event-related brain potentials (ERPs) reveal musical experience refines neural encoding and confers stronger categorical perception (CP) and neural organization for speech sounds. In addition to evoked brain activity, the human EEG can be decomposed into induced (non-phase-locked) response whose various frequency bands reflect different mechanisms of perceptual-cognitive processing. Here, we aimed to clarify which spectral properties of these neural oscillations are most prone to music-related neuroplasticity and which are linked to behavioral benefits in the categorization of speech...
February 15, 2017: Neuroscience
https://www.readbyqxmd.com/read/28210957/forced-treadmill-exercise-prevents-spatial-memory-deficits-in-aged-rats-probably-through-the-activation-of-na-k-atpase-in-the-hippocampus
#11
Cláudia Vanzella, Eduardo Farias Sanches, Felipe Kawa Odorcyk, Fabrício Nicola, Janaína Kolling, Aline Longoni, Tiago Marcon Dos Santos, Angela Terezinha de Souza Wyse, Carlos Alexandre Netto
Regular physical activity has shown to improve the quality of life and to prevent age-related memory deficits. Memory processing requires proper regulation of several enzymes such as sodium-potassium adenosine triphosphatase (Na(+), K(+)-ATPase) and acetylcholinesterase (AChE), which have a pivotal role in neuronal transmission. The present study investigated the effects of a treadmill running protocol in young (3 months), mature (6 months) and aged (22 months) Wistar rats, on: (a) cognitive function, as assessed in the Water maze spatial tasks; (b) Na(+), K(+)-ATPase and AChE activities in the hippocampus following cognitive training alone or treadmill running combined with cognitive training...
February 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28210643/perception-of-health-problems-among-competitive-runners-a-qualitative-study-of-cognitive-appraisals-and-behavioral-responses
#12
Sara Jelvegård, Toomas Timpka, Victor Bargoria, Håkan Gauffin, Jenny Jacobsson
BACKGROUND: Approximately 2 of every 3 competitive runners sustain at least 1 health problem each season. Most of these problems are nontraumatic injuries with gradual onset. The main known risk indicator for sustaining a new running-related injury episode is a history of a previous injury, suggesting that behavioral habits are part of the causal mechanisms. PURPOSE: Identification of elements associated with purposeful interpretations of body perceptions and balanced behavioral responses may supply vital information for prevention of health problems in runners...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28210339/anger-management-evaluation-of-a-cognitive-behavioral-training-program-for-table-tennis-players
#13
Georges Steffgen
Based on a systematic review of the literature on anger and anger management in sport, there is evidence that anger might be dysfunctional, especially in sports requiring selective attention and fine-tuned motor skills. The research literature suggests that cognitive-behavioral intervention programs can be fruitful in helping athletes to understand and control dysfunctional anger. Therefore, the main goal of the present study was to evaluate the effectiveness of a brief training program for table tennis players in cognitive-behavioral anger management that aimed at changing their noneffective anger reactions...
January 1, 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28205186/optimisation-of-cognitive-performance-in-rodent-operant-touchscreen-testing-evaluation-and-effects-of-reinforcer-strength
#14
Benjamin U Phillips, Christopher J Heath, Zofia Ossowska, Timothy J Bussey, Lisa M Saksida
Operant testing is a widely used and highly effective method of studying cognition in rodents. Performance on such tasks is sensitive to reinforcer strength. It is therefore advantageous to select effective reinforcers to minimize training times and maximize experimental throughput. To quantitatively investigate the control of behavior by different reinforcers, performance of mice was tested with either strawberry milkshake or a known powerful reinforcer, super saccharin (1.5% or 2% (w/v) saccharin/1.5% (w/v) glucose/water mixture)...
February 15, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28203607/epigallocatechin-gallate-a-useful-therapy-for-cognitive-disability-in-down-syndrome
#15
Fiorenza Stagni, Andrea Giacomini, Marco Emili, Sandra Guidi, Elisabetta Ciani, Renata Bartesaghi
Neurodevelopmental alterations and cognitive disability are constant features of Down syndrome (DS), a genetic condition due to triplication of chromosome 21. DYRK1A is one of the triplicated genes that is thought to be strongly involved in brain alterations. Treatment of Dyrk1A transgenic mice with epigallocatechin gallate (EGCG), an inhibitor of DYRK1A, improves cognitive performance, suggesting that EGCG may represent a suitable treatment of DS. Evidence in the Ts65Dn mouse model of DS shows that EGCG restores hippocampal development, although this effect is ephemeral...
2017: Neurogenesis (Austin, Tex.)
https://www.readbyqxmd.com/read/28198196/isolating-the-unique-effects-of-the-unified-protocol-treatment-modules-using-single-case-experimental-design
#16
Shannon Sauer-Zavala, Clair Cassiello-Robbins, Laren R Conklin, Jacqueline R Bullis, Johanna Thompson-Hollands, Katherine A Kennedy
The Unified Protocol (UP) for the Transdiagnostic Treatment of Emotional Disorders is a cognitive-behavioral intervention designed to treat the range of anxiety, depressive, and related disorders. Thus far, the UP treatment modules have only been studied when they are delivered in their entirety and presented in a standard sequence. To personalize the presentation of the UP modules for a given patient's presentation (e.g., providing the modules in a varied order, dropping irrelevant modules), it is first necessary to establish that each module leads to change in the skill it is designed to promote, and that these changes can occur in the absence of the other modules...
March 2017: Behavior Modification
https://www.readbyqxmd.com/read/28197083/balb-c-mice-can-learn-touchscreen-visual-discrimination-and-reversal-tasks-faster-than-c57bl-6-mice
#17
Karly M Turner, Christopher G Simpson, Thomas H J Burne
Touchscreen technology is increasingly being used to characterize cognitive performance in rodent models of neuropsychiatric disorders. Researchers are attracted to the automated system and translational potential for touchscreen-based tasks. However, training time is extensive and some mouse strains have struggled to learn touchscreen tasks. Here we compared the performance of commonly used C57BL/6 mice against the BALB/c mice, which are considered a poor performing strain, using a touchscreen task. BALB/c and C57BL/6 mice were trained to operate the touchscreens before learning a visual discrimination (VD) and reversal task...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28195510/health-professionals-explanations-of-suicidal-behaviour
#18
Inês Areal Rothes, Margarida Rangel Henriques
In a help relation with a suicidal person, the theoretical models of suicidality can be essential to guide the health professional's comprehension of the client/patient. The objectives of this study were to identify health professionals' explanations of suicidal behaviors and to study the effects of professional group, theoretical intervention models, and patient suicide experience in professionals' representations. Two hundred and forty-two health professionals filled out a self-report questionnaire. Exploratory principal components analysis was used...
January 1, 2017: Omega
https://www.readbyqxmd.com/read/28193875/spontaneous-expression-of-mirror-self-recognition-in-monkeys-after-learning-precise-visual-proprioceptive-association-for-mirror-images
#19
Liangtang Chang, Shikun Zhang, Mu-Ming Poo, Neng Gong
Mirror self-recognition (MSR) is generally considered to be an intrinsic cognitive ability found only in humans and a few species of great apes. Rhesus monkeys do not spontaneously show MSR, but they have the ability to use a mirror as an instrument to find hidden objects. The mechanism underlying the transition from simple mirror use to MSR remains unclear. Here we show that rhesus monkeys could show MSR after learning precise visual-proprioceptive association for mirror images. We trained head-fixed monkeys on a chair in front of a mirror to touch with spatiotemporal precision a laser pointer light spot on an adjacent board that could only be seen in the mirror...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28182486/personality-dimensions-of-the-captive-california-sea-lion-zalophus-californianus
#20
Lillian E Ciardelli, Alexander Weiss, David M Powell, Diana Reiss
Although the field of animal personality research is growing, information on sea lion personality is lacking. This is surprising as sea lions are charismatic, cognitively advanced, and relatively accessible for research. In addition, their presence in captivity and frequent interactions with humans allow for them to be closely observed in various contexts. These interactions provide a valuable and unique opportunity to assess dimensions of their personality. This study created a personality survey for captive California sea lions (Zalophus californianus) using a 3-step approach that balances comprehensiveness and comparability to other species...
February 2017: Journal of Comparative Psychology
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