Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Long-term enhanced desynchronization of the alpha rhythm following tetanic stimulation of human visual cortex

Clapp, Wesley C., Muthukumaraswamy, Suresh Daniel ORCID: https://orcid.org/0000-0001-7042-3920, Hamm, Jeff P., Teyler, Tim J. and Kirk, Ian J. 2006. Long-term enhanced desynchronization of the alpha rhythm following tetanic stimulation of human visual cortex. Neuroscience Letters 398 (3) , pp. 220-223. 10.1016/j.neulet.2005.12.081

Full text not available from this repository.

Abstract

It had been shown previously that a photic tetanus induces LTP-like changes in the visual cortex, as indexed by an enhancement of the N1b component of the visual evoked potential, recorded non-invasively by electroencephalography. This potentiation was shown to last over 1 h. In the present study, the effect of a photic tetanus on oscillatory activity is investigated. EEGs were collected from eight healthy subjects in three conditions while visual checkerboards were displayed. Following baseline presentations in two conditions a lateralized visual tetanus was given, either to the left or right visual field, and in a third condition no tetanus was given. This was followed by a return to baseline presentations, both immediately after the tetanus/control block, and 1 h later. Enhanced event-related desynchronization (ERD) of the alpha rhythm lasting 1 h was seen following the photic tetanus over occipital electrodes. Because ERD of the alpha rhythm is thought to represent active cortex, these results suggest that the visual tetanus induces long-lasting cortical changes, with stronger neuronal assemblies and increased neuronal output.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: Alpha rhythm; Long-term potentiation; Event-related desynchronization; Tetanus; Visual system; Human
Publisher: Elsevier
ISSN: 0304-3940
Last Modified: 20 Oct 2022 09:50
URI: https://orca.cardiff.ac.uk/id/eprint/33283

Citation Data

Cited 25 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item