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Related Experiment Video

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Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection

Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection

Published on: August 26, 2011

Using image reconstruction to investigate face perception in amnesia.

Chi-Hsun Chang¹, Sukhan Zehra¹, Adrian Nestor¹

¹Department of Psychology (Scarborough), University of Toronto, Toronto, Ontario, Canada.

Neuropsychologia

|April 29, 2023

Summary

Medial temporal lobe (MTL) damage impacts face perception, affecting facial shape and surface representations. Image reconstruction revealed comparable face perception between amnesic patients and controls, with some color representation differences.

Keywords:

Amnesia Face perception Image reconstruction Medial temporal lobe

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Area of Science:

Neuroscience
Cognitive Psychology
Visual Perception

Background:

Medial temporal lobe (MTL) traditionally linked to memory, but also implicated in face perception.
The precise impact of MTL lesions on facial shape and surface representations remains unclear.

Purpose of the Study:

To investigate how medial temporal lobe (MTL) damage affects face perception and representation.
To explore facial shape and surface information processing in amnesic patients using an image reconstruction approach.

Main Methods:

Employed a behavioral-based image reconstruction approach.
Assessed two amnesic patients (DA with extensive MTL lesion, BL with hippocampal dentate gyrus damage) and controls.
Utilized similarity judgments and a face oddity judgment task (FOJT).

Main Results:

DA showed intact performance on the FOJT, while BL exhibited impairments.
Reconstructed facial images were comparable between patients and controls.
Atypical face representations, particularly concerning color, were observed in patient BL.

Conclusions:

Medial temporal lobe (MTL) damage can influence face perception and representation, impacting specific features like color.
The image reconstruction method is effective for studying face perception in individuals with brain damage.
Findings offer novel insights into the neural underpinnings of face perception in amnesic patients.