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Verbal and Nonverbal Emotional Memory Following Unilateral Amygdala Damage
Journal article   Open access   Peer reviewed

Verbal and Nonverbal Emotional Memory Following Unilateral Amygdala Damage

Tony W Buchanan, Natalie L Denburg, Daniel Tranel and Ralph Adolphs
Learning & memory (Cold Spring Harbor, N.Y.), Vol.8(6), pp.326-335
11/2001
DOI: 10.1101/lm.40101
PMCID: PMC311388
PMID: 11773432
url
https://doi.org/10.1101/lm.40101View
Published (Version of record) Open Access

Abstract

The amygdala is involved in the normal facilitation of memory by emotion, but the separate contributions of the left and right amygdala to memory for verbal or nonverbal emotional material have not been investigated. Fourteen patients with damage to the medial temporal lobe including the amygdala (seven left, seven right), 18 brain-damaged, and 36 normal controls were exposed to emotional and neutral pictures accompanied by verbal narratives. Memory for both narratives and pictures was assessed with a free recall test 24 h later. Subjects with left amygdala damage failed to show the normally robust enhancement of memory for verbal and nonverbal emotional stimuli. The group with right amygdala damage showed the normal pattern of facilitation of memory by emotion for both verbal and nonverbal stimuli despite an overall reduction in memory performance. Furthermore, subjects with left amygdala damage were disproportionately impaired on memory for emotional narratives as compared with memory for emotional pictures. The latter finding offers partial support for a lateralized and material-specific pattern of the amygdala's contribution to emotional memory.
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