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: 1344-1350.


Author Minati, Ludovico
Jones, Catherine L.
Gray, Marcus A.
Medford, Nick
Harrison, Neil A.
Critchley, Hugo D.
Title Emotional modulation of visual cortex activity: a functional near-infrared spectroscopy study
Journal name Neuroreport   Check publisher's open access policy
ISSN 0959-4965
1473-558X
Publication date 2009-10
Sub-type Article (original research)
DOI 10.1097/WNR.0b013e328330c751
Volume 20
Issue 15
Start page 1344
End page 1350
Total pages 7
Place of publication Philadelphia, PA, United States
Publisher Lippincott Williams & Wilkins
Language eng
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.
Keyword Autonomic response
Blood pressure
Emotional modulation
Emotional pictures
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Advanced Imaging Publications
 
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