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Identifying local cognitive representations in the brain across age spans through voxel searchlights and representational similarity analysis ...
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Identifying local cognitive representations in the brain across age spans through voxel searchlights and representational similarity analysis ...
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Shared space, separate processes: neural activation patterns for auditory description and visual object naming in healthy adults
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Examining the Multifactorial Nature of Cognitive Aging with Covariance Analysis of Positron Emission Tomography Data
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Examining the multifactorial nature of cognitive aging with covariance analysis of PET data
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Identification and Differential Vulnerability of a Neural Network in Sleep Deprivation
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Identification and Differential Vulnerability of a Neural Network in Sleep Deprivation
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Bell-McGinty, Sandra; Habeck, Christian; Hilton, H. John; Rakitin, Brian; Scarmeas, Nikolaos; Zarahn, Eric; Flynn, Joseph; DeLaPaz, Robert; Basner, Robert; Stern, Yaakov. - : Oxford University Press, 2004
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Abstract:
The study aimed to identify task-related brain activation networks whose change in expression exhibits subject differences as a function of differential susceptibility to sleep deprivation. Brain activity during a non-verbal recognition memory task was investigated in an event-related functional MRI paradigm both prior to and after 48 h of sleep deprivation. Nineteen healthy subjects participated. Regional covariance analysis was applied to data. An activation network pattern was identified whose expression decreased from pre- to post-sleep deprivation in 15 out 19 subjects ( P < 0.05). Differential decrease in expression correlated with worsening performance in recognition accuracy ( P < 0.05). Sites of de-activation were found in the posterior cerebellum, right fusiform gyrus and precuneus, and left lingual and inferior temporal gyri; increased activation was found in the bilateral insula, claustrum and right putamen. A network whose expression decreased after sleep deprivation and correlated with memory performance was identified. We conclude that this activation network plays a role in cognitive function during sleep deprivation.
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URL: http://cercor.oxfordjournals.org/cgi/content/short/bhh011v1 https://doi.org/10.1093/cercor/bhh011
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Identification and Differential Vulnerability of a Neural Network in Sleep Deprivation
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Identification and Differential Vulnerability of a Neural Network in Sleep Deprivation ...
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