Object-based and location-based shifting of attention in Parkinson's disease

Shulan Hsieh, Chia Ying Lee, Wen Juh Hwang, Jing Jane Tsai

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)


Research into Parkinson's disease has made much use of the precuing paradigm developed by Posner to examine patients' ability to shift visuospatial attention. The majority of studies indicate that patients with Parkinson's disease have significantly reduced shift costs when compared with normal controls. This reduction in costs is ascribed to abnormal maintenance of attention resulting from Parkinson's disease. We know that visual attention is not directed to spatial locations alone but that it may also be directed to object representations. To date, however, it has not been clear whether the reduced shift costs apparent in Parkinson's disease patients are evident only on spatial locations or on both spatial locations and object representations. Therefore, in the current study we have adopted a new technique with a view to studying both location-based and object-based attentional components within the same paradigm. Our results with 17 patients with Parkinson's disease suggest, at least in the early stages, patients do not show deficits in maintenance of attention to the miscued source of stimulation as reflected in their normal magnitude of cuing effect related to shifting between locations and between objects. 14 normal persons were control subjects.

頁(從 - 到)1315-1325
期刊Perceptual and Motor Skills
發行號3 PART II
出版狀態Published - 1997 十二月 1

All Science Journal Classification (ASJC) codes

  • 實驗與認知心理學
  • 感覺系統


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