Emotional modulation of visual cortex activity: a functional near-infrared spectroscopy study

Minati, Ludovico, Jones, Catherine L., Gray, Marcus A., Medford, Nick, Harrison, Neil A. and Critchley, Hugo D. (2009) Emotional modulation of visual cortex activity: a functional near-infrared spectroscopy study. NeuroReport, 20 (15). pp. 1344-1350. ISSN 0959-4965

Full text not available from this repository.

Abstract

Functional neuroimaging and electroencephalography reveal emotional effects in the early visual cortex. Here, we used functional near-infrared spectroscopy to examine haemodynamic responses evoked by neutral, positive and negative emotional pictures, matched for brightness, contrast, hue, saturation, spatial frequency and entropy. Emotion content modulated amplitude and latency of oxy, deoxy and total haemoglobin response peaks, and induced peripheral autonomic reactions. The processing of positive and negative pictures enhanced haemodynamic response amplitude, and this effect was paralleled by blood pressure changes. The processing of positive pictures was reflected in reduced haemodynamic response peak latency. Together these data suggest that the early visual cortex holds amplitude-dependent representation of stimulus salience and latency-dependent information regarding stimulus valence, providing new insight into affective interaction with sensory processing.

Item Type: Article
Schools and Departments: Brighton and Sussex Medical School > Clinical Medicine
Subjects: R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry
R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry > RC0346 Neurology. Diseases of the nervous system Including speech disorders
Depositing User: Grecia GarciaGarcia
Date Deposited: 17 Aug 2011 10:58
Last Modified: 30 Nov 2012 16:55
URI: http://sro.sussex.ac.uk/id/eprint/7245
Google Scholar:5 Citations
📧 Request an update