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Dissociation of affective modulation of recollective and perceptual experience following amygdala damage
Authors:
Papps, B.P., CALDER, A.J., Young, A.W. & O'Carroll, R.
Reference:
Journal of Neurology, Neurosurgery, and Psychiatry, 74(2), 253-254
Year of publication:
2003
CBU number:
5284
Abstract:
Objectives: It has been suggested that ?similar neural mechanisms may underlie the affective modulation of both recollective and perceptual experience.?[1] We report the case of a patient who has bilateral amygdala damage and marked impairments in the perception of emotion, particularly fear. Method: In the current study, the patient DR and ten healthy control subjects (matched for school leaving age, IQ and non-emotional memory performance) were shown a series of slides accompanied by an emotionally arousing narrative.[2] One week later DR and the controls were given a surprise memory test for this material. In addition, they completed a verbal memory test using emotionally arousing stimuli. Results: DR and the healthy control subjects demonstrated a normative pattern of enhanced memory for emotional material. Conclusion: On the basis of these results and the previously demonstrated impairment of perception of emotion in this patient, we conclude that different neural mechanisms may underlie affective modulation of recollective and perceptual experience.