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https://www.readbyqxmd.com/read/28545066/bayesian-estimation-of-directed-functional-coupling-from-brain-recordings
#1
Danilo Benozzo, Pasi Jylänki, Emanuele Olivetti, Paolo Avesani, Marcel A J van Gerven
In many fields of science, there is the need of assessing the causal influences among time series. Especially in neuroscience, understanding the causal interactions between brain regions is of primary importance. A family of measures have been developed from the parametric implementation of the Granger criteria of causality based on the linear autoregressive modelling of the signals. We propose a new Bayesian method for linear model identification with a structured prior (GMEP) aiming to apply it as linear regression method in the context of the parametric Granger causal inference...
2017: PloS One
https://www.readbyqxmd.com/read/28544863/how-social-status-shapes-person-perception-and-evaluation-a-social-neuroscience-perspective
#2
Bradley D Mattan, Jennifer T Kubota, Jasmin Cloutier
Inferring the relative rank (i.e., status) of others is essential to navigating social hierarchies. A survey of the expanding social psychological and neuroscience literatures on status reveals a diversity of focuses (e.g., perceiver vs. agent), operationalizations (e.g., status as dominance vs. wealth), and methodologies (e.g., behavioral, neuroscientific). Accommodating this burgeoning literature on status in person perception, the present review offers a novel social neuroscientific framework that integrates existing work with theoretical clarity...
May 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28544076/challenges-in-measuring-individual-differences-in-functional-connectivity-using-fmri-the-case-of-healthy-aging
#3
Linda Geerligs, Kamen A Tsvetanov, Cam-Can, Richard N Henson
Many studies report individual differences in functional connectivity, such as those related to age. However, estimates of connectivity from fMRI are confounded by other factors, such as vascular health, head motion and changes in the location of functional regions. Here, we investigate the impact of these confounds, and pre-processing strategies that can mitigate them, using data from the Cambridge Centre for Ageing & Neuroscience (www.cam-can.com). This dataset contained two sessions of resting-state fMRI from 214 adults aged 18-88...
May 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28544058/beyond-differences-in-means-robust-graphical-methods-to-compare-two-groups-in-neuroscience
#4
Guillaume A Rousselet, Cyril R Pernet, Rand R Wilcox
If many changes are necessary to improve the quality of neuroscience research, one relatively simple step could have great pay-offs: to promote the adoption of detailed graphical methods, combined with robust inferential statistics. Here we illustrate how such methods can lead to a much more detailed understanding of group differences than bar graphs and t-tests on means. To complement the neuroscientist's toolbox, we present two powerful tools that can help us understand how groups of observations differ: the shift function and the difference asymmetry function...
May 24, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28543449/the-ascending-projections-of-the-nuclei-of-the-descending-trigeminal-tract-nttd-in-the-zebra-finch-taeniopygia-guttata
#5
Macarena Faunes, J Martin Wild
In our traditional view of the avian somatosensory system, input from the beak and head reaches the telencephalon via a disynaptic pathway, involving projections from the principal sensory nucleus (PrV) directly to nucleus basorostralis (previously called nucleus basalis), whereas input from the rest of the body follows a trisynatic pathway similar to that in mammals, involving projections from the dorsal column nuclei to the thalamus, and thence to somatosensory cortex. However, the role of the nuclei of the descending trigeminal tract (nTTD) in this scenario is unclear, partly because their ascending projections have been examined in only one species, the mallard duck (Arends & Dubbeldam, 1984, Neuroscience 13(3):797-817)...
May 23, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28543438/humanized-mice-a-brief-overview-on-their-diverse-applications-in-biomedical-research
#6
REVIEW
Shigeyoshi Fujiwara
Model animals naturally differ from humans in various respects and results from the former are not directly translatable to the latter. One approach to address this issue is humanized mice that are defined as mice engrafted with functional human cells or tissues. In humanized mice, we can investigate the development and function of human cells or tissues (including their products encoded by human genes) in the in vivo context of a small animal. As such, humanized mouse models have played important roles that cannot be substituted by other animal models in various areas of biomedical research...
May 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28542356/the-use-of-preferred-social-stimuli-as-rewards-for-rhesus-macaques-in-behavioural-neuroscience
#7
Helen Gray, Bradley Pearce, Alexander Thiele, Candy Rowe
Macaques are often motivated to perform in neuroscientific experiments by implementing fluid restriction protocols. Daily access to water is controlled and the monkeys are rewarded with droplets of fluid for performing correct trials in the laboratory. Although these protocols are widely used and highly effective, it is important from a 3Rs perspective to investigate refinements that may help to lessen the severity of the fluid restriction applied. We assessed the use of social stimuli (images of conspecifics) as rewards for four rhesus macaques performing simple cognitive tasks...
2017: PloS One
https://www.readbyqxmd.com/read/28542156/toward-standard-practices-for-sharing-computer-code-and-programs-in-neuroscience
#8
Stephen J Eglen, Ben Marwick, Yaroslav O Halchenko, Michael Hanke, Shoaib Sufi, Padraig Gleeson, R Angus Silver, Andrew P Davison, Linda Lanyon, Mathew Abrams, Thomas Wachtler, David J Willshaw, Christophe Pouzat, Jean-Baptiste Poline
No abstract text is available yet for this article.
May 25, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28541234/psychiatric-specialty-training-in-greece
#9
EDITORIAL
M Margariti, V Kontaxakis, D Ploumpidis
The reform and development of psychiatric services require, in addition to financial resources, reserves in specialized human resources. The role of psychiatrists in this process, and at reducing the consequences of mental morbidity is evident. Psychiatrists are required to play a multifaceted role as clinicians, as experts in multidisciplinary team environments and as advisors in the recognition of public needs in mental health issues, as teachers and mentors for students and other health professionals, as researchers in order to enrich our knowledge in the scientific field of psychiatry, and as public health specialists in the development of the mental health services system...
January 2017: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/28540771/identifying-therapeutic-targets-for-alzheimer-s-disease-with-big-data
#10
Nilüfer Ertekin-Taner
Nilüfer Ertekin-Taner is a Professor of Neuroscience and Neurology at the Mayo Clinic, Jacksonville, FL, USA. A neurogeneticist and board-certified behavioral neurologist, she received her medical degree from Hacettepe University Medical School in Ankara, Turkey and her doctorate degree in Molecular Neuroscience from Mayo Graduate School. She completed her residency training in the Department of Neurology at Mayo Clinic in Rochester (MN, USA) and fellowship in Behavioral Neurology at Mayo Clinic in Jacksonville...
April 2017: Neurodegenerative Disease Management
https://www.readbyqxmd.com/read/28540750/neurobiology-of-emotions-an-update
#11
Vanderson Esperidião-Antonio, Marilia Majeski-Colombo, Diana Toledo-Monteverde, Glaciele Moraes-Martins, Juliana José Fernandes, Marjorie Bauchiglioni de Assis, Stefânia Montenegro, Rodrigo Siqueira-Batista
The 'nature' of emotions is one of the archaic themes of Western thought, thematized in different cultural manifestations - such as art, science, philosophy, myths and religion -, since Ancient times. In the last decades, the advances in neurosciences have permitted the construction of hypotheses that explain emotions, especially through the studies involving the limbic system. To present an updated discussion about the neurobiology of processes relating to emotions - focusing (1) on the main neural structures that relate to emotions, (2) the paths and circuits of greater relevance, (3) the implicated neurotransmitters, (4) the connections that possess neurovegetative control and (5) the discussion about the main emotions - is the objective of this present article...
May 25, 2017: International Review of Psychiatry
https://www.readbyqxmd.com/read/28539904/the-neural-systems-of-forgiveness-an-evolutionary-psychological-perspective
#12
REVIEW
Joseph Billingsley, Elizabeth A R Losin
Evolution-minded researchers posit that the suite of human cognitive adaptations may include forgiveness systems. According to these researchers, forgiveness systems regulate interpersonal motivation toward a transgressor in the wake of harm by weighing multiple factors that influence both the potential gains of future interaction with the transgressor and the likelihood of future harm. Although behavioral research generally supports this evolutionary model of forgiveness, the model's claims have not been examined with available neuroscience specifically in mind, nor has recent neuroscientific research on forgiveness generally considered the evolutionary literature...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28539584/hunger-enhances-consistent-economic-choices-in-non-human-primates
#13
Hiroshi Yamada
Hunger and thirst are fundamental biological processes that drive consumption behavior in humans and non-human animals. While the existing literature in neuroscience suggests that these satiety states change how consumable rewards are represented in the brain, it remains unclear as to how they change animal choice behavior and the underlying economic preferences. Here, I used combined techniques from experimental economics, psychology, and neuroscience to measure food preferences of marmoset monkeys (Callithrix jacchus), a recently developed primate model for neuroscience...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28539304/emindlog-self-measurement-of-anxiety-and-depression-using-mobile-technology
#14
Thomas M Penders, Karl L Wuensch, Philip T Ninan
BACKGROUND: Quantifying anxiety and depressive experiences permits individuals to calibrate where they are and monitor intervention-associated changes. eMindLog is a novel self-report measure for anxiety and depression that is grounded in psychology with an organizing structure based on neuroscience. OBJECTIVE: Our aim was to explore the psychometric properties of eMindLog in a nonclinical sample of subjects. METHODS: In a cross-sectional study of eMindLog, a convenience sample of 198 adults provided informed consent and completed eMindLog and the Hospital Anxiety and Depression Scale (HADS) as a reference...
May 24, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28539053/atomic-psychiatry-an-essay
#15
Ian Patrick Paddy Burges Watson
OBJECTIVE: This article aims to address the need to rethink the classification of mental illness and to draw attention to the current use of quantum biology and its likely future use in understanding the nature of mental illness. CONCLUSION: It is desirable to separate out neuroscience and clinical research and to become better acquainted with the concepts of quantum mechanical/quantum biological theory and its contribution to medicine.
May 1, 2017: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/28536548/complementarity-as-generative-principle-a-thought-pattern-for-aesthetic-appreciations-and-cognitive-appraisals-in-general
#16
Yan Bao, Alexandra von Stosch, Mona Park, Ernst Pöppel
In experimental aesthetics the relationship between the arts and cognitive neuroscience has gained particular interest in recent years. But has cognitive neuroscience indeed something to offer when studying the arts? Here we present a theoretical frame within which the concept of complementarity as a generative or creative principle is proposed; neurocognitive processes are characterized by the duality of complementary activities like bottom-up and top-down control, or logistical functions like temporal control and content functions like perceptions in the neural machinery...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28536045/toward-defining-deep-brain-stimulation-targets-in-mni-space-a-subcortical-atlas-based-on-multimodal-mri-histology-and-structural-connectivity
#17
REVIEW
Siobhan Ewert, Philip Plettig, Ningfei Li, Mallar Chakravarty, Louis Collins, Todd Herrington, Andrea Kühn, Andreas Horn
Three-dimensional atlases of subcortical brain structures are valuable tools to reference anatomy in neuroscience and neurology. For instance, they can be used to study the position and shape of the three most common deep brain stimulation (DBS) targets, the subthalamic nucleus (STN), internal part of the pallidum (GPi) and ventral intermediate nucleus of the thalamus (VIM) in stereotactic space and in spatial relationship to DBS electrodes. Here, we present a composite atlas that is based on manual segmentations of a multimodal high resolution brain template, histology and structural connectivity...
May 20, 2017: NeuroImage
https://www.readbyqxmd.com/read/28535393/neuroscience-when-a-single-image-can-cause-a-seizure
#18
Christopher J Honey, Taufik Valiante
It has been known since classical antiquity that viewing particular images can trigger seizures in some individuals. Now we have a clue to the mechanism, as many of these images amplify 30-80 Hz rhythmic activity in the visual brain.
May 22, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28534738/optocontrol-of-glutamate-receptor-activity-by-single-side-chain-photoisomerization
#19
Viktoria Klippenstein, Christian Hoppmann, Shixin Ye, Lei Wang, Pierre Paoletti
Engineering light-sensitivity into proteins has wide ranging applications in molecular studies and neuroscience. Commonly used tethered photoswitchable ligands, however, require solvent-accessible protein labeling, face structural constrains, and are bulky. Here, we designed a set of optocontrollable NMDA receptors by directly incorporating single photoswitchable amino acids (PSAAs) providing genetic encodability, reversibility, and site tolerance. We identified several positions within the multi-domain receptor endowing robust photomodulation...
May 23, 2017: ELife
https://www.readbyqxmd.com/read/28534026/how-cells-can-control-their-size-by-pumping-ions
#20
Alan R Kay
The ability of all cells to set and regulate their size is a fundamental aspect of cellular physiology. It has been known for sometime but not widely so, that size stability in animal cells is dependent upon the operation of the sodium pump, through the so-called pump-leak mechanism (Tosteson and Hoffman, 1960). Impermeant molecules in cells establish an unstable osmotic condition, the Donnan effect, which is counteracted by the operation of the sodium pump, creating an asymmetry in the distribution of Na(+) and K(+) staving off water inundation...
2017: Frontiers in Cell and Developmental Biology
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