BROWSE

Related Researcher

Author's Photo

Chung, Dongil
Decision Neuroscience & Cognitive Engineering Lab
Research Interests
  • Decision Neuroscience; Neuroimaging; Neuroeconomics; Decision-making; Social interaction

ITEM VIEW & DOWNLOAD

Spatiotemporal dynamics and functional correlates of evoked neural oscillations with different spectral powers in human visual cortex

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Spatiotemporal dynamics and functional correlates of evoked neural oscillations with different spectral powers in human visual cortex
Author
Kim, Song E.Kim, Won SupKim, Byung GonChung, DongilJeong, JaeseungLee, Jae SungTae, Woo SukHong, Seung BongLee, Hyang Woon
Issue Date
2013-11
Publisher
ELSEVIER IRELAND LTD
Citation
CLINICAL NEUROPHYSIOLOGY, v.124, no.11, pp.2248 - 2256
Abstract
Objective: To investigate spatiotemporal characteristics and functional correlates of evoked oscillations (EOs) at different frequency bands in human visual cortex. Methods: Flash visual evoked potentials (FVEPs) were recorded from 11 epilepsy patients with intracranial electrodes placed over the occipital and adjacent cortices. Spatiotemporal characteristics of spectral powers and correlation with various visual responses elicited by electrical cortical stimulations were analyzed in the same electrodes. Results: High gamma (60-150 Hz) EOs were first recorded in the cuneus and lingual gyri around the calcarine sulcus. Low gamma (30-60 Hz) EOs appeared also in the mesial occipital cortex slightly later and lasted longer than high gamma EGOs. In contrast, lower frequency (LF) < 30 Hz EOs were recorded more diffusely from occipital surfaces with delayed onset and longer duration. High gamma EOs were predominantly associated with simple form visual responses, whereas low gamma and LF EOs were with intermediate form and LF EOs with complex form responses. Conclusions: FVEP spectral power analysis directly recorded from human visual cortex showed distinct spatiotemporal distributions in high and low gamma, or LF bands that have different functional correlates. Significance: Phase-locked EOs in these frequency bands may have special neuroanatomical and functional organization during early visual processing. Crown Copyright (C) 2013 Published by Elsevier Ireland Ltd. on behalf of International Federation of Clinical Neurophysiology.
URI
https://scholarworks.unist.ac.kr/handle/201301/23201
URL
http://linkinghub.elsevier.com/retrieve/pii/S1388245713006718
DOI
10.1016/j.clinph.2013.04.341
ISSN
1388-2457
Appears in Collections:
BME_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU