16,713 Hits in 5.6 sec

Open eyes and closed eyes elicit different temporal properties of brain functional networks

Yihe Weng, Xiaojin Liu, Huiqing Hu, Huiyuan Huang, Senning Zheng, Qinyuan Chen, Jie Song, Bolin Cao, Junjing Wang, Shuai Wang, Ruiwang Huang
2020 NeuroImage  
The eyes are our windows to the brain. There are differences in brain activity between people who have their eyes closed (EC) and eyes open (EO).  ...  Using a sliding time window approach and a k-means clustering algorithm, we calculated the temporal properties of dynamic functional connectivity (dFC) states in the eyes conditions.  ...  ., 2017 ) added new information about dynamic patterns of brain activity elicited by eyes conditions, the temporal properties of dFC states and the dynamic topological properties of functional networks  ... 
doi:10.1016/j.neuroimage.2020.117230 pmid:32771616 fatcat:6twzc6ul6vcsrcxu6huvsh7i4q

Exploring the alpha desynchronization hypothesis in resting state networks with intracranial electroencephalography and wiring cost estimates

Jaime Gómez-Ramírez, Shelagh Freedman, Diego Mateos, José Luis Pérez Velázquez, Taufik A. Valiante
2017 Scientific Reports  
However, although these studies explicitly conclude that eyes open and eyes closed are different baseline conditions, they do not provide a method for comparing the functional connectivity patterns elicited  ...  Second, we investigate whether network topological properties have enough statistical power to be used as a feature/covariate to distinguish between the eyes closed and eyes open conditions.  ...  Acknowledgements We acknowledge the support of the Bial Foundation, grant number #20614. Author Contributions  ... 
doi:10.1038/s41598-017-15659-0 pmid:29142213 pmcid:PMC5688079 fatcat:k4355gq4mzatrb2zlmwbhdk5ma

Eyes closed or Eyes open? Exploring the alpha desynchronization hypothesis in resting state functional connectivity networks with intracranial EEG [article]

Jaime Gomez-Ramirez, Shelagh Freedman, Diego Mateos, Jose Luis Perez Velazquez, Taufik Valiante
2017 bioRxiv   pre-print
We compare the functional connectivity patterns in an eyes closed resting state with an eyes open resting state, and show that functional connectivity in the alpha band decreases in the eyes open condition  ...  This paper addresses a fundamental question, are eyes closed and eyes open resting states equivalent baseline conditions, or do they have consistently different electrophysiological signatures?  ...  Acknowledgements We acknowledge the support of the Bial Foundation, grant number #20614.  ... 
doi:10.1101/118174 fatcat:tmztbv6mcjhylaitwy3qnxqipa

Initiation of the optokinetic response (OKR) in mice

H. Tabata, N. Shimizu, Y. Wada, K. Miura, K. Kawano
2011 Journal of Vision  
We also found that temporal frequencies higher than 1.5 Hz elicited transient increase in the eye velocity, but weak or no sustained eye movements.  ...  The response showed a narrow band-pass property for the spatiotemporal frequency, with the largest sustained response observed at 0.125 cycle/deg and 1.5 Hz.  ...  Funabiki for his many useful comments about the initial setup of the equipment, and Ms. Y. Sugita for her helpful support during the experiments.  ... 
doi:10.1167/10.1.13 pmid:20143906 fatcat:3qba73eumbgitlc7e255ard77m

Early Development of Network Oscillations in the Ferret Visual Cortex

Yuhui Li, Chunxiu Yu, Zhe Charles Zhou, Iain Stitt, Kristin K. Sellers, John H. Gilmore, Flavio Frohlich
2017 Scientific Reports  
We found that both the spontaneous and visually-elicited LFP power was increased after eye-opening, especially in higher frequency bands (>30 Hz).  ...  Here we recorded the spontaneous and visualelicited local field potential (LFP) and multi-unit activity (MUA) in the visual cortex of freely-moving juvenile ferrets before and after eye-opening.  ...  This work was supported by National Institute of Mental Health of the National Institutes of Health under Award Number R01MH101547, and the Foundation of Hope under Number 17-0082.  ... 
doi:10.1038/s41598-017-17502-y pmid:29259184 pmcid:PMC5736753 fatcat:fqg75nekvnepngqafv6zbbt4ea

EEG–BOLD correlations during (post-)adolescent brain maturation

Rafael Lüchinger, Lars Michels, Ernst Martin, Daniel Brandeis
2011 NeuroImage  
Data were collected in a 20 min eyes-open/eyes-closed resting state paradigm.  ...  The changing frequency composition of the resting state EEG reflects maturation of brain function.  ...  We like to thank Thomas Koenig for ICA implementation and Christian Gaser for some MATLAB code advice.  ... 
doi:10.1016/j.neuroimage.2011.02.050 pmid:21349336 fatcat:2dpw4sj7ijhyhb6aciaum4qoem

Local and remote functional connectivity of neocortex under the inhibition influence

Andrew A Fingelkurts, Alexander A Fingelkurts, Reetta Kivisaari, Eero Pekkonen, Risto J Ilmoniemi, Seppo Kähkönen
2004 NeuroImage  
EEG measures at 20 channels were evaluated on two occasions: (1) eyes closed, (2) eyes open.  ...  eyes opened).  ...  The main one is the following: segmentation into stationary fragments is impossible without construction of an adequate mathematical model, but  ... 
doi:10.1016/j.neuroimage.2004.03.013 pmid:15219610 fatcat:hncti5jz3bbrvjapy5ointojnu

Reporting of Resting-State Functional Magnetic Resonance Imaging Preprocessing Methodologies

Syed Hamza Waheed, Saeedeh Mirbagheri, Shruti Agarwal, Arash Kamali, Noushin Yahyavi-Firouz-Abadi, Ammar Chaudhry, Michael DiGianvittorio, Sachin K. Gujar, Jay J. Pillai, Haris I. Sair
2016 Brain Connectivity  
All of the studies reported the temporal resolution for the scan and the software used for the analysis.  ...  A majority of the studies mentioned the scanning duration, eye status, and smoothing kernel. Overall, we demonstrate the wide variability in reporting of preprocessing methods in rs-fMRI studies.  ...  These findings on different resting states and how they may affect functional MRI findings show that each study may need to tailor their eye status, depending on which network properties are of interest  ... 
doi:10.1089/brain.2016.0446 pmid:27507129 fatcat:le56lbxq4rh3bo7a5illvzfjtm

Applications of Resting-State fNIRS in the Developing Brain: A Review From the Connectome Perspective

Zhishan Hu, Guangfang Liu, Qi Dong, Haijing Niu
2020 Frontiers in Neuroscience  
Early brain development from infancy through childhood is closely related to the development of cognition and behavior in later life.  ...  in exploring brain network architecture and its changes during the development.  ...  Frontal, temporal, parietal, occipital Awake, eyes closed 11 CW6 12 S/24 D 46 Topology Koen and Rugg (2019) Children 9.0 ± 1.5 Y 12 Frontal, temporal Awake, eyes closed 8 FOIRE-3000  ... 
doi:10.3389/fnins.2020.00476 pmid:32581671 pmcid:PMC7284109 fatcat:nmzb5iczubfsblgjgbm62y7gr4

Electrophysiology and brain imaging of biological motion

A. Puce, D. Perrett
2003 Philosophical Transactions of the Royal Society of London. Biological Sciences  
Studies of single cells, field potential recordings and functional neuroimaging data indicate that specialized visual mechanisms exist in the superior temporal sulcus (STS) of both human and non-human  ...  Facial movements such as deviations in eye gaze, important for gauging an individual's social attention, and mouth movements, indicative of potential utterances, generate particularly robust neural responses  ...  s research has been supported by the National Health and Medical Research Council (Australia) and the Australia Research Council.  ... 
doi:10.1098/rstb.2002.1221 pmid:12689371 pmcid:PMC1693130 fatcat:mhr6eh7uljf25il5gotqwvnqpa

Abnormal late visual responses and alpha oscillations in neurofibromatosis type 1: a link to visual and attention deficits

Maria J Ribeiro, Otília C d'Almeida, Fabiana Ramos, Jorge Saraiva, Eduardo D Silva, Miguel Castelo-Branco
2014 Journal of Neurodevelopmental Disorders  
Methods: Electroencephalogram/event-related potential (EEG/ERP) responses were measured during visual processing (NF1 n = 17; controls n = 19) and idle periods with eyes closed and eyes open (NF1 n = 12  ...  Neurofibromatosis type 1 (NF1) affects several areas of cognitive function including visual processing and attention.  ...  Acknowledgments The authors would like to acknowledge all the participants and their families for their participation in the study. This work was funded by the Institute of Interdisciplinary  ... 
doi:10.1186/1866-1955-6-4 pmid:24559228 pmcid:PMC3944002 fatcat:r5426sdft5cuzfax5o4l3uqjam

The emergence of the social brain network: Evidence from typical and atypical development

2005 Development and Psychopathology  
studies involving 3-, 4-, and 12-month-old infants viewing faces of different orientation and direction of eye gaze.  ...  In this paper we focus on the development of components of this social brain network during early childhood and test aspects of a particular viewpoint on human functional brain development: "interactive  ...  whose eyelids opened and closed every 500 ms, giving the appearance of blinking.  ... 
doi:10.1017/s0954579405050297 pmid:16262984 pmcid:PMC1464100 fatcat:u42kweovrbhxhkrmzjwch34qky

The eye contact effect: mechanisms and development

Atsushi Senju, Mark H. Johnson
2009 Trends in Cognitive Sciences  
The social brain is the cortical and subcortical network of regions, including ventral and medial prefrontal cortex, superior temporal gyrus, fusiform gyrus, cingulate gyrus and amygdala 5 , that are specialized  ...  In addition, functional imaging studies in adults have revealed that eye contact can modulate activity in structures in the social brain network, and developmental studies show evidence for preferential  ...  Acknowledgments We thank Kathrin Cohen Kadosh, Laurence Conty, Gergely Csibra, Kevin Pelphrey and Bruno Wicker for the help and discussions on earlier version of draft.  ... 
doi:10.1016/j.tics.2008.11.009 pmid:19217822 fatcat:jw72p74b5zhyjez6puxaf6khxy

Bad Design and Good Performance: Strategies of the Visual System for Enhanced Scene Analysis [chapter]

Florentin Wörgötter
2001 Lecture Notes in Computer Science  
Finally, I will present data about the changing the spatio-temporal resolution of cortical cell responses for the first time measured in an open-loop paradigm, which we achieved by specifically eliminating  ...  network-or computer vision engineer.  ...  properties of our visual front-end, the eye or the retinal network, respectively.  ... 
doi:10.1007/3-540-44668-0_3 fatcat:lgsjwznq5reqnbaqx3akmmvyq4

Illusions of Visual Motion Elicited by Electrical Stimulation of Human MT Complex

Andreas M. Rauschecker, Mohammad Dastjerdi, Kevin S. Weiner, Nathan Witthoft, Janice Chen, Aslihan Selimbeyoglu, Josef Parvizi, Angela Sirigu
2011 PLoS ONE  
Our study provides evidence for the sufficient causal link between the hMT + network and the human conscious experience of visual motion.  ...  In the current study, we use functional magnetic resonance imaging (fMRI), intracranial electrocorticography (ECoG), and electrical brain stimulation (EBS) in three patients implanted with intracranial  ...  Wagner, and B. Wandell for insightful comments throughout the study, and the staff at Stanford Epilepsy Monitoring Unit for assistance and guidance during intracranial recordings.  ... 
doi:10.1371/journal.pone.0021798 pmid:21765915 pmcid:PMC3135604 fatcat:74gioeoqzjalpgnem7irvozdze
« Previous Showing results 1 — 15 out of 16,713 results