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 0959-4965Full text not available from this repository.
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.
|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|
|Google Scholar:||5 Citations|