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Working Memory Overload: Fronto-Limbic Interactions and Effects on Subsequent Working Memory Function

Disturbed Functional Connectivity of Cortical Activation during Semantic Discrimination in Patients with Schizophrenia and Subjects at Genetic High-risk

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Working Memory Overload: Fronto-Limbic Interactions and Effects on Subsequent Working Memory Function

Content Provider	Springer Nature Link
Author	Yun, Richard J. Krystal, John H. Mathalon, Daniel H.
Copyright Year	2010
Abstract	The human working memory system provides an experimentally useful model for examination of neural overload effects on subsequent functioning of the overloaded system. This study employed functional magnetic resonance imaging in conjunction with a parametric working memory task to characterize the behavioral and neural effects of cognitive overload on subsequent cognitive performance, with particular attention to cognitive-limbic interactions. Overloading the working memory system was associated with varying degrees of subsequent decline in performance accuracy and reduced activation of brain regions central to both task performance and suppression of negative affect. The degree of performance decline was independently predicted by three separate factors operating during the overload condition: the degree of task failure, the degree of amygdala activation, and the degree of inverse coupling between the amygdala and dorsolateral prefrontal cortex. These findings suggest that vulnerability to overload effects in cognitive functioning may be mediated by reduced amygdala suppression and subsequent amygdala-prefrontal interaction.
Starting Page	96
Ending Page	108
Page Count	13
File Format	PDF
ISSN	19317557
Journal	Brain Imaging and Behavior
Volume Number	4
Issue Number	1
e-ISSN	19317565
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-02-20
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Functional magnetic resonance imaging Dorsolateral prefrontal cortex Amygdala Working memory Emotional-cognitive interaction Health Psychology Child and School Psychology Clinical Psychology Cognitive Psychology Neuropsychology Public Health/Gesundheitswesen
Content Type	Text
Resource Type	Article
Subject	Neurology Radiology, Nuclear Medicine and Imaging Cognitive Neuroscience Behavioral Neuroscience Neurology (clinical) Cellular and Molecular Neuroscience Psychiatry and Mental Health

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Working Memory Overload: Fronto-Limbic Interactions and Effects on Subsequent Working Memory Function

Working Memory Overload: Fronto-Limbic Interactions and Effects on Subsequent Working Memory Function

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Working Memory Overload: Fronto-Limbic Interactions and Effects on Subsequent Working Memory Function