Why the study?
Does sensory-cognitive activation alter cerebral blood flow compared to partial sensory deprivation in healthy young men?
Does sensory-cognitive activation alter cerebral blood flow compared to partial sensory deprivation in healthy young men?
Sensory-cognitive activation increases whole-brain cerebral blood flow, particularly in the primary visual cortex, without inducing stress in healthy young men.
Sensory-cognitive activation safely raises CBF in healthy young men; leaves open translation to patients or altered protocols.
Eight healthy right-handed young men were subjected to local CBF measurement by [15O]water and positron emission tomography during partial sensory deprivation and during sensory-cognitive activation; physiological, hormonal, and subjective stress measurements were also performed. Results indicated that (a) "whole-brain" CBF increased during activation; (b) the greatest increase in CBF was in the primary visual cortex; (c) differences between hemispheres were not observed, but CBF was greater anteriorly than posteriorly in the deprivation condition only; (d) within-subject variability of CBF was not influenced by the sensory-cognitive condition; and (e) the procedure was not stressful.
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Cameron et al. (1990) studied this question.
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