Emotional modulation of visual cortex activity: A functional nearinfrared spectroscopy study

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

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Abstract

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.

Item Type: Article
Additional Information: Neuroreport. Author manuscript; available in PMC 2010 June 25.
Keywords: Emotional pictures; Emotional modulation; Visual cortex; Functional near-infrared spectroscopy (fNIRS); Blood pressure; Autonomic response
Schools and Departments: Brighton and Sussex Medical School > Clinical Medicine
Subjects: B Philosophy. Psychology. Religion > BF Psychology
B Philosophy. Psychology. Religion > BF Psychology > BF0309 Consciousness. Cognition Including learning, attention, comprehension, memory, imagination, genius, intelligence, thought and thinking, psycholinguistics, mental fatigue
B Philosophy. Psychology. Religion > BF Psychology > BF0511 Affection. Feeling. Emotion
R Medicine > RC Internal medicine
R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry
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Depositing User: Hazelle Woodhurst
Date Deposited: 25 Aug 2011 15:53
Last Modified: 06 Mar 2017 16:55
URI: http://sro.sussex.ac.uk/id/eprint/7252
Google Scholar:5 Citations

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