Georgiou-Karistianis, N and Farrow, M and Wilson-Ching, M and Churchyard, A and Bradshaw, JL and Sheppard, DM, Deficits in selective attention in symptomatic Huntington disease: assessment using an attentional blink paradigm, Cognitive and behavioral neurology : official journal of the Society for Behavioral and Cognitive Neurology, 25, (1) pp. 1-6. ISSN 1543-3633 (2012) [Refereed Article]
BACKGROUND: Impaired selective attention in Huntington disease (HD) may manifest as difficulty in identifying a single target embedded among a series of distractors in rapid serial visual presentation tasks.
METHOD: We used an attentional blink (AB) paradigm to examine whether attentional control is impaired in symptomatic HD. Fourteen HD patients and 13 age-matched healthy controls performed a rapid serial visual presentation task in which 2 targets (T1 and T2) and numerous distractors were presented in rapid succession. We assessed the accuracy of T1 identification and the AB (impaired T2 detection after the correct identification of T1).
RESULTS: Among the HD patients, identification of T1 was significantly impaired and AB was significantly larger but not longer. The HD patients also made significantly more random errors.
CONCLUSIONS: Frontostriatal or frontoparietal dysfunction is likely to compromise attentional control in HD, such that well-masked and rapidly presented target stimuli are difficult to detect and identify, especially as the difficulty level increases. Although we previously reported no AB deficits in presymptomatic HD, with manifest disease we found that the progressive frontoparietal cortical changes compromise attentional control mechanisms.
|Item Type:||Refereed Article|
|Research Division:||Medical and Health Sciences|
|Research Field:||Neurosciences not elsewhere classified|
|Objective Group:||Clinical Health (Organs, Diseases and Abnormal Conditions)|
|Objective Field:||Nervous System and Disorders|
|UTAS Author:||Farrow, M (Dr Maree Farrow)|
|Web of Science® Times Cited:||7|
|Deposited By:||Wicking Dementia Research and Education Centre|
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