Dual target identification and the attentional blink in Parkinson's disease.

Full Abstract

In healthy adults, deficits in identifying a second target following a previously attended target in Rapid Serial Visual Presentation (RSVP) occur between intertarget intervals of approximately 100-500 ms. This Attentional Blink (AB) is investigated in nondemented medicated Parkinson's patients using a modification of the standard paradigm that required the identification of two red letters embedded in a black letter distractor stream. Parkinson's patients and controls produced an equivalent AB, although with a different pattern of errors. Thus, the processing and clearance of information was largely preserved in nondemented Parkinson's patients, without evidence of bradyphrenia. However, perseveration of earlier RSVP items in short-term memory was thought to explain the different pattern of errors.

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Author information

Author/s: Vardy, Yvette (Y); Bradshaw, John L (JL); Iansek, Robert (R);

Affiliation: Department of Psychology, Monash University, Clayton, Victoria, Australia.

Journal and publication information

Publication Type: Comparative Study; Journal Article

Journal: Journal of clinical and experimental neuropsychology (J Clin Exp Neuropsychol), published in Netherlands. (Language: eng)

Reference: 2003-May; vol 25 (issue 3) : pp 361-75

Dates: Created 2003/08/14; Completed 2003/09/17; Revised 2008/04/14;

PMID: 12916649, status: MEDLINE (last retrieval date: 11/6/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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