keyword
MENU ▼
Read by QxMD icon Read
search

Computational neurobiology

keyword
https://www.readbyqxmd.com/read/29317605/non-invasive-modulation-reduces-repetitive-behavior-in-a-rat-model-through-the-sensorimotor-cortico-striatal-circuit
#1
Henriette Edemann-Callesen, Bettina Habelt, Franziska Wieske, Mark Jackson, Niranjan Khadka, Daniele Mattei, Nadine Bernhardt, Andreas Heinz, David Liebetanz, Marom Bikson, Frank Padberg, Ravit Hadar, Michael A Nitsche, Christine Winter
Involuntary movements as seen in repetitive disorders such as Tourette Syndrome (TS) results from cortical hyperexcitability that arise due to striato-thalamo-cortical circuit (STC) imbalance. Transcranial direct current stimulation (tDCS) is a stimulation procedure that changes cortical excitability, yet its relevance in repetitive disorders such as TS remains largely unexplored. Here, we employed the dopamine transporter-overexpressing (DAT-tg) rat model to investigate behavioral and neurobiological effects of frontal tDCS...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29259152/neural-computations-underpinning-the-strategic-management-of-influence-in-advice-giving
#2
Uri Hertz, Stefano Palminteri, Silvia Brunetti, Cecilie Olesen, Chris D Frith, Bahador Bahrami
Research on social influence has focused mainly on the target of influence (e.g., consumer and voter); thus, the cognitive and neurobiological underpinnings of the source of the influence (e.g., politicians and salesmen) remain unknown. Here, in a three-sided advice-giving game, two advisers competed to influence a client by modulating their own confidence in their advice about which lottery the client should choose. We report that advisers' strategy depends on their level of influence on the client and their merit relative to one another...
December 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/29250006/developmental-changes-in-learning-computational-mechanisms-and-social-influences
#3
REVIEW
Florian Bolenz, Andrea M F Reiter, Ben Eppinger
Our ability to learn from the outcomes of our actions and to adapt our decisions accordingly changes over the course of the human lifespan. In recent years, there has been an increasing interest in using computational models to understand developmental changes in learning and decision-making. Moreover, extensions of these models are currently applied to study socio-emotional influences on learning in different age groups, a topic that is of great relevance for applications in education and health psychology...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29234089/impact-of-treatment-on-resting-cerebral-blood-flow-and-metabolism-in-obsessive-compulsive-disorder-a-meta-analysis
#4
A L van der Straten, D Denys, G A van Wingen
Neurobiological models of obsessive-compulsive disorder (OCD) posit that its clinical symptoms such as repetitive thoughts and behaviors are related to hyperactivity in the cortico-striato-thalamo-cortical (CSTC) circuit. Small scale neuroimaging studies have shown that treatment of OCD is associated with reduced activity across different brain structures within this circuitry. We performed the first meta-analysis of positron emission tomography (PET) and single photon emission computed tomography (SPECT) studies that investigated cerebral blood flow or glucose metabolism in patients with OCD before and after pharmacological or psychological treatment...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29225356/quantitative-neurobiological-evidence-for-accelerated-brain-aging-in-alcohol-dependence
#5
Matthias Guggenmos, Katharina Schmack, Maria Sekutowicz, Maria Garbusow, Miriam Sebold, Christian Sommer, Michael N Smolka, Hans-Ulrich Wittchen, Ulrich S Zimmermann, Andreas Heinz, Philipp Sterzer
The premature aging hypothesis of alcohol dependence proposes that the neurobiological and behavioural deficits in individuals with alcohol dependence are analogous to those of chronological aging. However, to date no systematic neurobiological evidence for this hypothesis has been provided. To test the hypothesis, 119 alcohol-dependent subjects and 97 age- and gender-matched healthy control subjects underwent structural MRI. Whole-brain grey matter volume maps were computed from structural MRI scans using voxel-based morphometry and parcelled into a comprehensive set of anatomical brain regions...
December 11, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/29218708/three-dimensional-reconstruction-of-the-cranial-and-anterior-spinal-nerves-in-early-tadpoles-of-xenopus-laevis-pipidae-anura
#6
Benjamin Naumann, Lennart Olsson
Xenopus laevis is one of the most widely used model organism in neurobiology. It is therefore surprising, that no detailed and complete description of the cranial nerves exists for this species. Using classical histological sectioning in combination with fluorescent whole mount antibody staining and micro-computed tomography we prepared a detailed innervation map and a freely-rotatable 3D model of the cranial nerves and anterior-most spinal nerves of early X. laevis tadpoles. Our results confirm earlier descriptions of the pre-otic cranial nerves and present the first detailed description of the post-otic cranial nerves...
December 8, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29169779/mind-matter-interactions-and-the-frontal-lobes-of-the-brain-a-novel-neurobiological-model-of-psi-inhibition
#7
Morris Freedman, Malcolm Binns, Fuqiang Gao, Melissa Holmes, Austyn Roseborough, Stephen Strother, Antonino Vallesi, Stanley Jeffers, Claude Alain, Peter Whitehouse, Jennifer D Ryan, Robert Chen, Michael D Cusimano, Sandra E Black
CONTEXT: Despite a large literature on psi, which encompasses a range of experiences including putative telepathy (mind-mind connections), clairvoyance (perceiving distant objects or events), precognition (perceiving future events), and mind-matter interactions, there has been insufficient focus on the brain in relation to this controversial phenomenon. In contrast, our research is based on a novel neurobiological model suggesting that frontal brain systems act as a filter to inhibit psi and that the inhibitory mechanisms may relate to self-awareness...
October 23, 2017: Explore: the Journal of Science and Healing
https://www.readbyqxmd.com/read/29155279/scalar-timing-in-memory-a-temporal-map-in-the-hippocampus
#8
Sorinel A Oprisan, Tristan Aft, Mona Buhus, Catalin V Buhusi
Decision making, rate calculation, and planning are examples of daily tasks we perform. They require accurate timing and involve many cortical areas such as the prefrontal cortex, the striatum, and the hippocampus. Although the neurobiological origin and the mechanisms of interval timing are largely unknown, we developed increasingly accurate mathematical and computational models that can mimic some properties of time perception. The accepted paradigm of temporal durations storage is that the objective elapsed time from the short-term memory is transferred to the reference memory using a multiplicative "memory translation constant" K*...
November 16, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29122586/the-evolutionary-dynamics-of-language
#9
REVIEW
Luc Steels, Eörs Szathmáry
The well-established framework of evolutionary dynamics can be applied to the fascinating open problems how human brains are able to acquire and adapt language and how languages change in a population. Schemas for handling grammatical constructions are the replicating unit. They emerge and multiply with variation in the brains of individuals and undergo selection based on their contribution to needed expressive power, communicative success and the reduction of cognitive effort. Adopting this perspective has two major benefits...
November 6, 2017: Bio Systems
https://www.readbyqxmd.com/read/29100819/behavioural-and-computational-methods-reveal-differential-effects-for-how-delayed-and-rapid-onset-antidepressants-effect-decision-making-in-rats
#10
Claire A Hales, Conor J Houghton, Emma S J Robinson
Major depressive disorder (MDD) is one of the most prevalent psychiatric disorders. Until the recent discovery of the rapid onset antidepressant action of ketamine, pharmacological treatments for MDD were limited to conventional antidepressant drugs with delayed clinical efficacy. Using a judgement bias task, this study has investigated whether the temporal differences observed in patients would be reflected in affective biases and decision making behaviour in rodents. The diffusion model was also used to investigate the underlying decision making processes...
October 31, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29066078/computational-neuroscience-across-the-lifespan-promises-and-pitfalls
#11
REVIEW
Wouter van den Bos, Rasmus Bruckner, Matthew R Nassar, Rui Mata, Ben Eppinger
In recent years, the application of computational modeling in studies on age-related changes in decision making and learning has gained in popularity. One advantage of computational models is that they provide access to latent variables that cannot be directly observed from behavior. In combination with experimental manipulations, these latent variables can help to test hypotheses about age-related changes in behavioral and neurobiological measures at a level of specificity that is not achievable with descriptive analysis approaches alone...
October 13, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29045575/shared-and-disorder-specific-neurocomputational-mechanisms-of-decision-making-in-autism-spectrum-disorder-and-obsessive-compulsive-disorder
#12
Christina O Carlisi, Luke Norman, Clodagh M Murphy, Anastasia Christakou, Kaylita Chantiluke, Vincent Giampietro, Andrew Simmons, Michael Brammer, Declan G Murphy, David Mataix-Cols, Katya Rubia
Autism spectrum disorder (ASD) and obsessive-compulsive disorder (OCD) often share phenotypes of repetitive behaviors, possibly underpinned by abnormal decision-making. To compare neural correlates underlying decision-making between these disorders, brain activation of boys with ASD (N = 24), OCD (N = 20) and typically developing controls (N = 20) during gambling was compared, and computational modeling compared performance. Patients were unimpaired on number of risky decisions, but modeling showed that both patient groups had lower choice consistency and relied less on reinforcement learning compared to controls...
December 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29041860/maternal-behavior-of-the-mouse-dam-toward-pups-implications-for-maternal-separation-model-of-early-life-stress
#13
Rodrigo Orso, Luis Eduardo Wearick-Silva, Kerstin Camile Creutzberg, Anderson Centeno-Silva, Laura Glusman Roithmann, Rafaelly Pazzin, Saulo Gantes Tractenberg, Fernando Benetti, Rodrigo Grassi-Oliveira
Maternal care is essential for an adequate pup development, as well as for the health of the dam. Exposure to stress in early stages of life can disrupt this dam-pup relationship promoting altered neurobiological and behavioral phenotypes. However, there is a lack of consensus regarding the effects of daily maternal separation (MS) on the pattern of maternal behavior. The aim of this study is to compare the patterns of maternal behavior between mice exposed to MS and controls. BALB/c mice were subjected to MS for a period of 180 min/day from postnatal day 2-7 (n = 17) or designated to be standard animal facility reared (AFR) controls (n = 19)...
October 18, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29031703/comparative-approximations-of-criticality-in-a-neural-and-quantum-regime
#14
REVIEW
Jesse Sterling Bettinger
Under a variety of conditions, non-linear systems with many degrees of freedom tend to evolve towards complexity and criticality. Over the last few decades, a steady proliferation of models re: nonlinear and far-from-equilibrium thermodynamics of metastable, many-valued systems arose, serving as attributes of a 'critical' attractor landscape. Building off recent data citing trademark aspects of criticality in the brain-including: power-laws, scale-free (1/f) behavior (scale invariance, or scale independence, critical slowing, and avalanches-it has been conjectured that operating at criticality entails functional advantages such as: optimized neural computation and information processing; memory; large dynamical ranges; long-range communication; and "enhanced ability to react to highly diverse stimuli...
October 11, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28981612/local-global-parcellation-of-the-human-cerebral-cortex-from-intrinsic-functional-connectivity-mri
#15
Alexander Schaefer, Ru Kong, Evan M Gordon, Timothy O Laumann, Xi-Nian Zuo, Avram J Holmes, Simon B Eickhoff, B T Thomas Yeo
A central goal in systems neuroscience is the parcellation of the cerebral cortex into discrete neurobiological "atoms". Resting-state functional magnetic resonance imaging (rs-fMRI) offers the possibility of in vivo human cortical parcellation. Almost all previous parcellations relied on 1 of 2 approaches. The local gradient approach detects abrupt transitions in functional connectivity patterns. These transitions potentially reflect cortical areal boundaries defined by histology or visuotopic fMRI. By contrast, the global similarity approach clusters similar functional connectivity patterns regardless of spatial proximity, resulting in parcels with homogeneous (similar) rs-fMRI signals...
July 18, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28955272/recurrent-convolutional-neural-networks-a-better-model-of-biological-object-recognition
#16
Courtney J Spoerer, Patrick McClure, Nikolaus Kriegeskorte
Feedforward neural networks provide the dominant model of how the brain performs visual object recognition. However, these networks lack the lateral and feedback connections, and the resulting recurrent neuronal dynamics, of the ventral visual pathway in the human and non-human primate brain. Here we investigate recurrent convolutional neural networks with bottom-up (B), lateral (L), and top-down (T) connections. Combining these types of connections yields four architectures (B, BT, BL, and BLT), which we systematically test and compare...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28953764/the-relative-contribution-of-goal-directed-and-habit-systems-to-psychiatric-disorders
#17
Sophie Woodhead, Trevor Robbins
Psychiatric disorders may be caused by underlying imbalances between goal-directed and habit systems in the brain. Numerous studies have aimed to establish whether this is because of a goal-directed system deficit, enhanced habit system, or both. This transdiagnostic approach to studying psychiatric disorders is increasingly popular. Maladaptive habitual behaviour is present in many disorders. It is the principal observation in disorders of compulsivity and is also present in other psychiatric disorders that are not primarily characterised by compulsive behaviour...
September 2017: Psychiatria Danubina
https://www.readbyqxmd.com/read/28951611/sensory-perception-in-autism
#18
REVIEW
Caroline E Robertson, Simon Baron-Cohen
Autism is a complex neurodevelopmental condition, and little is known about its neurobiology. Much of autism research has focused on the social, communication and cognitive difficulties associated with the condition. However, the recent revision of the diagnostic criteria for autism has brought another key domain of autistic experience into focus: sensory processing. Here, we review the properties of sensory processing in autism and discuss recent computational and neurobiological insights arising from attention to these behaviours...
November 2017: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/28945744/relating-dynamic-brain-states-to-dynamic-machine-states-human-and-machine-solutions-to-the-speech-recognition-problem
#19
Cai Wingfield, Li Su, Xunying Liu, Chao Zhang, Phil Woodland, Andrew Thwaites, Elisabeth Fonteneau, William D Marslen-Wilson
There is widespread interest in the relationship between the neurobiological systems supporting human cognition and emerging computational systems capable of emulating these capacities. Human speech comprehension, poorly understood as a neurobiological process, is an important case in point. Automatic Speech Recognition (ASR) systems with near-human levels of performance are now available, which provide a computationally explicit solution for the recognition of words in continuous speech. This research aims to bridge the gap between speech recognition processes in humans and machines, using novel multivariate techniques to compare incremental 'machine states', generated as the ASR analysis progresses over time, to the incremental 'brain states', measured using combined electro- and magneto-encephalography (EMEG), generated as the same inputs are heard by human listeners...
September 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28942354/the-priming-of-basic-combinatory-responses-in-meg
#20
Esti Blanco-Elorrieta, Victor S Ferreira, Paul Del Prato, Liina Pylkkänen
Priming has been a powerful tool for the study of human memory and especially the memory representations relevant for language. However, although it is well established that lexical access can be primed, we do not know exactly what types of computations can be primed above the word level. This work took a neurobiological approach and assessed the ways in which the complex representation of a minimal combinatory phrase, such as red boat, can be primed, as evidenced by the spatiotemporal profiles of magnetoencephalography (MEG) signals...
September 21, 2017: Cognition
keyword
keyword
117187
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"