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The Human Visual Claustrum Responses to Physical Stimulus Properties and Subjective Content During Movie Viewing
Adam Coates1,2, Paul Sedlmayr1, Anna Wastian1
1Department of Psychology, University of Graz, Graz, Austria.
Human Brain Mapping
|June 25, 2026
Summary
The human visual claustrum responds to motion and subjective arousal, interest, and valence. Its activity pattern resembles the hMT/V5+ complex, suggesting a role in saliency detection and attention modulation.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Human Brain Imaging
Background:
- The human claustrum is a poorly understood grey matter structure involved in various cognitive functions.
- Recent research using high-resolution fMRI has identified a visual zone in the human claustrum.
- Its precise role in visual processing and sensory integration remains unclear.
Purpose of the Study:
- To investigate the specific stimulus properties that activate the human visual claustrum.
- To compare the visual claustrum's response patterns with those of visual cortical regions (hV4 and hMT/V5+).
- To explore the potential role of the visual claustrum in saliency detection and attention.
Main Methods:
- Utilized high-resolution functional magnetic resonance imaging (fMRI) in humans.
- Analyzed visual claustrum activity in response to varying physical stimulus features (contrast, color, motion).
- Correlated claustrum responses with subjective ratings of arousal, valence, and interest.
- Performed comparative analysis with activity in visual cortical areas hV4 and hMT/V5+.
Main Results:
- The visual claustrum's activity was significantly associated with stimulus motion.
- Subjective ratings of arousal, interest, and valence also correlated with claustrum responses.
- The response pattern of the visual claustrum closely matched that of the hMT/V5+ complex.
- No significant association was found with low- and mid-level contrast or color features.
Conclusions:
- The human visual claustrum is sensitive to motion and subjective emotional/attentional states.
- Its functional similarity to hMT/V5+ suggests a role in processing salient visual information.
- Findings indicate the visual claustrum may play a role in modulating attention based on sensory input saliency.
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