Effects of closed-head injury on attentional processes: An information-processing stage analysis

Shum D.H.K., McFarland K., Bain J.D. and Humphreys M.S. (1990) Effects of closed-head injury on attentional processes: An information-processing stage analysis. Journal of Clinical and Experimental Neuropsychology, 12 2: 247-264.

Author Shum D.H.K.
McFarland K.
Bain J.D.
Humphreys M.S.
Title Effects of closed-head injury on attentional processes: An information-processing stage analysis
Journal name Journal of Clinical and Experimental Neuropsychology
ISSN 0168-8634
Publication date 1990-01-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 12
Issue 2
Start page 247
End page 264
Total pages 18
Language eng
Subject 2728 Clinical Neurology
2808 Neurology
3200 Psychology
3203 Clinical Psychology
Abstract The present study, based on Sternberg's (1969) additive-factor method, examined attentional processes in terms of four information-processing stages (feature extraction, identification, response selection, and motor adjustment). Four task variables were used to operationally define the stages (signal quality, signal similarity, signal-response compatibility, and foreperiod uncertainty). In two studies, a visuo-spatial reaction-time task was undertaken by a group of university subjects (Experiment 1) and by three groups of closed-head-injured patients (severe short-term, severe long-term, and mild short-term) and their corresponding matched controls (Experiment 2). The results indicated that both patients and normals exhibited a similar mode of linear information processing. In addition, it was found that the severe short-term group was impaired on the response-selection stage and response selection stage; the severe long-term group was impaired only on the response-selection; and no evidence of impairment was found for the mild short-term patients. The implications of these findings with reference to the study of attentional processes in closed-head injured patients and to neuropsychological assessment and rehabilitation are discussed.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 57 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 28 Jun 2016, 16:09:25 EST by System User