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Effects of Signal Modality and Event Asynchrony on Vigilance Performance and Cerebral Hemovelocity

Shaw, Tyler H.
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154632131

Abstract Details

2006, MA, University of Cincinnati, Arts and Sciences : Psychology.
Transcranial Doppler sonography was used to examine the effects of the sensory modality of signals and event asynchrony on blood flow velocity (CBFV) in the cerebral hemispheres during the performance of a 40 –min vigilance task. Observers monitored pulses of light or sound for changes in duration under conditions in which the stimulus events to be scrutinized for the presence of critical signals occurred in a temporally regular (synchronous) or irregular (asynchronous) manner. Consistent with expectations derived from a sensory equivalence model of vigilance performance, overall signal detections and CBFV declined linearly over time in a manner that was independent of the sensory channels employed for stimulus delivery. Hemispheric differences in the overall decline in CBFV and in temporal changes in CBFV associated with the synchronous and asynchronous event conditions suggest that a cooperative interaction model may best describe the role of cerebral functioning in the control of vigilance performance.
Dr. Joel Warm (Advisor)
77 p.
Psychology, Experimental
Transcranial Doppler Sonography (TCD); Cerebral Hemovelocity; Sensory Modality; Event Asnychrony; Sensory equivalence; Temporal uncertainty

Recommended Citations

Citations

  • Shaw, T. H. (2006). Effects of Signal Modality and Event Asynchrony on Vigilance Performance and Cerebral Hemovelocity [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154632131

    APA Style (7th edition)

  • Shaw, Tyler. Effects of Signal Modality and Event Asynchrony on Vigilance Performance and Cerebral Hemovelocity. 2006. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154632131.

    MLA Style (8th edition)

  • Shaw, Tyler. "Effects of Signal Modality and Event Asynchrony on Vigilance Performance and Cerebral Hemovelocity." Master's thesis, University of Cincinnati, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154632131

    Chicago Manual of Style (17th edition)

ucin1154632131
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© 2006, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.