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

Magnetoencephalographic investigation of human cortical area V1 using color stimuli

Fylan, Fiona, Holliday, Ian E., Singh, Krish Devi, Anderson, Stephen J. and Harding, Graham F. A. 1997. Magnetoencephalographic investigation of human cortical area V1 using color stimuli. Neuroimage 6 (1) , pp. 47-57. 10.1006/nimg.1997.0273

Full text not available from this repository.

Abstract

The aim of this study was to determine the response properties of the human visual cortex to chromatic stimuli using magnetoencephalography (MEG). Evoked responses were recorded to isoluminant red/green sinusoidal gratings for a wide range of spatial and temporal frequencies. For each condition the response was dominated by a single major component which was well modeled by an equivalent current dipole. Coregistration of MEG and MRI data provided evidence that the principal evoked cortical activity originated from visual area V1. To investigate the chromatic response properties of this area, the maximum global field power of the evoked response was plotted as a function of stimulus spatial and temporal frequency. The spatial-frequency tuning was lowpass and the temporal-frequency tuning was multimodal, with peaks at 0 and 4 Hz. The results demonstrate the use of MEG as a technique for investigating activity from discrete regions of cortex.

Item Type: Article
Status: Published
Schools: Psychology
Neuroscience and Mental Health Research Institute (NMHRI)
ISSN: 1053-8119
Last Modified: 04 Jun 2017 04:10
URI: http://orca-mwe.cf.ac.uk/id/eprint/33928

Citation Data

Cited 50 times in Google Scholar. View in Google Scholar

Cited 35 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item