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Title: Neural correlates of enhanced visual short-term memory for angry faces: An fMRI study
Authors: Jackson, MC
Wolf, C
Johnston, SJ
Raymond, JE
Linden, DEJ
Keywords: Social communication
Face identity
Emotional expression
Visual short-term memory (VSTM)
Magnetic resonance imaging
Basal ganglia
Publication Date: 2008
Publisher: Public Library of Science (PLoS)
Citation: PLoS ONE, 3(10): e3536, 2008
Abstract: Background: Fluid and effective social communication requires that both face identity and emotional expression information are encoded and maintained in visual short-term memory (VSTM) to enable a coherent, ongoing picture of the world and its players. This appears to be of particular evolutionary importance when confronted with potentially threatening displays of emotion - previous research has shown better VSTM for angry versus happy or neutral face identities.Methodology/Principal Findings: Using functional magnetic resonance imaging, here we investigated the neural correlates of this angry face benefit in VSTM. Participants were shown between one and four to-be-remembered angry, happy, or neutral faces, and after a short retention delay they stated whether a single probe face had been present or not in the previous display. All faces in any one display expressed the same emotion, and the task required memory for face identity. We find enhanced VSTM for angry face identities and describe the right hemisphere brain network underpinning this effect, which involves the globus pallidus, superior temporal sulcus, and frontal lobe. Increased activity in the globus pallidus was significantly correlated with the angry benefit in VSTM. Areas modulated by emotion were distinct from those modulated by memory load.Conclusions/Significance: Our results provide evidence for a key role of the basal ganglia as an interface between emotion and cognition, supported by a frontal, temporal, and occipital network.
Description: Copyright: © 2008 Jackson et al.
Sponsorship: The authors were supported by a Wellcome Trust grant (grant number 077185/Z/05/Z) and by BBSRC (UK) grant BBS/B/16178.
ISSN: 1932-6203
Appears in Collections:Psychology
Dept of Life Sciences Research Papers

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