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- W120423540 abstract "Blood flow velocities in the anterior, middle, and posterior cerebral arteries (VACAs, VMCAs, VPCAs) of three separate groups of healthy volunteers (n = 22–24) were obtained noninvasively with a transcranial Doppler procedure during rest and during sets of 24-sec cognitive tasks that had varied visual requirements: remembering seen and heard items; generating autobiographical images; and visualizing and mentally rotating stimuli. Both global and time-course velocity values (averaged and for each of eight measures, respectively, from a thinking period) were analyzed. Global VMCA increased bilaterally over baseline during recalling; global VACA was not affected; and global VPCA increased after the subjects saw but not after they heard the items. Global VMCA and VACA elevated bilaterally during imaging, but VPCA did not. Visualizing, but not mentally rotating, stimuli increased all three global velocities bilaterally. Task-dependent time-course modulations in velocities appeared during the thinking periods. Velocities hyperelevated temporarily at the outset of all periods, except for VPCA during tasks not requiring direct vision. VACA slowed to baseline during recollection of the heard items, and all velocities slowed during the visualizing tasks but remained above baseline." @default.
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- W120423540 title "Cerebral blood flow velocities modulate during cognitive tasks using vision and vision-like requirements: A TCD study" @default.
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- W120423540 doi "https://doi.org/10.3758/bf03330607" @default.
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