Emotional modulation of visual cortex activity: A functional nearinfrared spectroscopy study
journal contributionposted on 2023-06-07, 16:06 authored by Ludovico Minati, Catherine L. Jones, Marcus A. Gray, Nick Medford
Functional neuroimaging and electroencephalography reveal emotional effects in early visual cortex. Here, we used fNIRS 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 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.
PublisherLippincott, Williams & Wilkins
Department affiliated with
- Clinical and Experimental Medicine Publications
NotesNeuroreport. Author manuscript; available in PMC 2010 June 25.
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