Transcranial Doppler assessment of cerebral blood flow velocity during visual spatial selective attention in humans

Cornelia Schnittger, Sönke Johannes, Thomas F. Münte*

*Corresponding author for this work
16 Citations (Scopus)

Abstract

Blood flow velocities of the posterior cerebral arteries were obtained while healthy subjects were engaged in a visual spatial attention task. Experimental runs consisted of series of stimuli comprised of four elements (two left and two right of a central fixation point) presented briefly in blue against a purple screen. After a period of passive viewing a left or right pointing arrow indicated the visual half-field to be attended by the subjects in order to detect identical symbols on the attended side. Relative to the passive viewing condition a marked increase of flow was seen in both posterior cerebral arteries during the attention period. No differential increase of flow as a function of attended field was detected. These results are discussed in comparison with recent positron-emission tomography (PET) and electrophysiological data obtained with the same task.

Original languageEnglish
JournalNeuroscience Letters
Volume214
Issue number1
Pages (from-to)41-44
Number of pages4
ISSN0304-3940
DOIs
Publication statusPublished - 16.08.1996

Research Areas and Centers

  • Academic Focus: Center for Brain, Behavior and Metabolism (CBBM)

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