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

journal contribution
posted on 2023-06-07, 16:06 authored by Ludovico Minati, Catherine L. Jones, Marcus A. Gray, Nick Medford, Neil Harrison, Hugo CritchleyHugo Critchley
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.

History

Publication status

  • Published

Journal

NeuroReport

ISSN

0959-4965

Publisher

Lippincott, Williams & Wilkins

Issue

15

Volume

20

Page range

1344-1350

Department affiliated with

  • Clinical and Experimental Medicine Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2011-08-17

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    University of Sussex (Publications)

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