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Emotion recognition following human pulvinar damage.

Robert Ward¹, Andrew J Calder, Maxine Parker

¹Wolfson Centre for Clinical and Cognitive Neuroscience, University of Wales, Bangor LL57 2AS, UK. r.ward@bangor.ac.uk

Neuropsychologia

|January 26, 2007

Summary

The pulvinar, particularly the medial pulvinar, is essential for recognizing fearful facial expressions. Without a functioning pulvinar, even with intact cortex, fear recognition is impossible.

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Area of Science:

Neuroscience
Cognitive Neuroscience
Psychology

Background:

Pulvinar activation correlates with viewing fearful expressions.
The necessity of pulvinar activation for fear recognition remains unassessed.

Observation:

A patient with complete unilateral pulvinar loss could not recognize fearful expressions in their contralesional field.
Patients with damage limited to anterior or lateral pulvinar showed no recognition deficits.

Findings:

Fear recognition is mediated by the human medial pulvinar.
The pulvinar's role in fear recognition involves integration with the amygdala via direct and indirect cortical connections.
Cortical processing alone is insufficient for recognizing fearful expressions.

Implications:

The pulvinar plays a primary, integrative role in fear recognition.
Understanding pulvinar function is crucial for comprehending emotional processing and neurological disorders affecting facial recognition.