Covert visuospatial attentional mechanisms in Parkinson's disease

Bennett, K. M. B.; Waterman, C.; Scarpa, Marina; Castiello, Umberto

doi:10.1093/brain/118.1.153

Cited by 37 publications

(22 citation statements)

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“…The reduced costs in patients at the longest SOA supports the idea that disengagement of attention from the cued location was faster in patients than in controls. Although, the results of the present study seem to be consistent with several studies investigating voluntary visual spatial shifts of attention two studies did not obtain the same ®ndings (Bennett et al, 1995;Hsieh et al, 1996). Bennett et al only found impaired performance in PD patients when both cueing (orienting) and focussing (by increasing the box contour sizes) was manipulated, thereby increasing attentional resource demands of the task.…”

Section: Discussionsupporting

confidence: 67%

Voluntary and Automatic Visual Spatial Shifts of Attention in Parkinsons Disease: An Analysis of Costs and Benefits

Pollux¹,

Robertson²

2001

Journal of Clinical and Experimental Neuropsychology

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Visual spatial shifts of attention were investigated in 13 patients suffering from Parkinson's disease and 20 control subjects. Attention was directed towards a target location with peripheral or central cues at varying SOAs in two separate experiments. A benefit and cost analysis was conducted on reaction times. The results of the central cueing task showed that in comparison with control subjects, costs of invalid cueing were reduced in patients. Results of the peripheral cueing task revealed that although the cueing effect (valid-invalid) was similar for patients and controls, the effect of valid cueing (neutral-valid) was greater in patients. The effects observed in both tasks were explained as an impaired ability of patients with Parkinson's disease to maintain attention.

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Section: Discussionsupporting

confidence: 67%

Voluntary and Automatic Visual Spatial Shifts of Attention in Parkinsons Disease: An Analysis of Costs and Benefits

Pollux¹,

Robertson²

2001

Journal of Clinical and Experimental Neuropsychology

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“…Although nondemented PD patients often perform similarly to neurologically healthy individuals on tests that require the facilitatory aspects of orienting (Bennett, Waterman, Scarpa, & Castiello, 1995; Goldman, Baty, Buckles, Sahrmann, & Morris, 1998), they frequently are impaired when conditions promote a conflict between task-relevant and irrelevant information, such as on tests of selective attention (Filoteo, Maddox, Ing, & Song, 2007), negative priming (Mari-Beffa, Hayes, Machado, & Hindle, 2005), set shifting (Downes et al, 1989), and inhibition of return. Inhibitory attention and working memory involve overlapping processes, and space-based and object-based aspects of these processes are functionally and neurally separable (Chou & Yeh, 2008; Simmonds, Pekar, & Mostofsky, 2008; Zhou & Chen, 2008).…”

Section: Parkinson's Diseasementioning

confidence: 99%

Visual spatial cognition in neurodegenerative disease

2010

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Visual spatial impairment is often an early symptom of neurodegenerative disease; however, this multi-faceted domain of cognition is not well-assessed by most typical dementia evaluations. Neurodegenerative diseases cause circumscribed atrophy in distinct neural networks, and accordingly, they impact visual spatial cognition in different and characteristic ways. Anatomically-focused visual spatial assessment can assist the clinician in making an early and accurate diagnosis. This article will review the literature on visual spatial cognition in neurodegenerative disease clinical syndromes, and where research is available, by neuropathologic diagnoses. Visual spatial cognition will be organized primarily according to the following schemes: bottom-up / top-down processing, dorsal / ventral stream processing, and egocentric / allocentric frames of reference.

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“…In particular, it has been suggested that these patients have an attention deficit that is mediated by impaired inhibitory processes (Filoteo, Rilling, & Strayer, 2002). Although nondemented PD patients often perform similarly to neurologically healthy individuals on tests that require the facilitatory aspects of orienting (Bennett, Waterman, Scarpa, & Castiello, 1995; Goldman, Baty, Buckles, Sahrmann, & Morris, 1998), they frequently are impaired when conditions promote a conflict between task-relevant and irrelevant information, such as on tests of selective attention (Filoteo, Maddox, Ing, & Song, 2007), negative priming (Mari-Beffa, Hayes, Machado, & Hindle, 2005), and set shifting (Downes et al, 1989). It should be noted, however, that PD patients can perform normally on some attention tasks that require inhibition (Grande et al, 2006; Possin, Cagigas, Strayer, & Filoteo, 2006).…”

mentioning

confidence: 99%

Space-based but not object-based inhibition of return is impaired in Parkinson's disease

et al. 2009

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Impairments in certain aspects of attention have frequently been reported in Parkinson's disease (PD), including reduced inhibition of return (IOR). Recent evidence suggests that IOR can occur when attention is directed at objects or locations, but previous investigations of IOR in PD have not systematically compared these two frames of reference. The present study compared the performance of 18 nondemented patients with PD and 18 normal controls on an IOR task with two conditions. In the “object-present” condition, objects surrounded the cues and targets so that attention was cued to both a spatial location and to a specific object. In the “object-absent” condition, surrounding objects were not presented so that attention was cued only to a spatial location. When participants had to rely on space-based cues, PD patients demonstrated reduced IOR compared to controls. In contrast, when objects were present in the display and participants could use object-based cues, PD patients exhibited normal IOR. These results suggest that PD patients are impaired in inhibitory aspects of space-based attention, but are able to overcome this impairment when their attention can be directed at object-based frames of reference. This dissociation supports the view that space-based and object-based components of attention involve distinct neurocognitive processes.

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Covert visuospatial attentional mechanisms in Parkinson's disease

Cited by 37 publications

References 0 publications

Voluntary and Automatic Visual Spatial Shifts of Attention in Parkinsons Disease: An Analysis of Costs and Benefits

Voluntary and Automatic Visual Spatial Shifts of Attention in Parkinsons Disease: An Analysis of Costs and Benefits

Visual spatial cognition in neurodegenerative disease

Space-based but not object-based inhibition of return is impaired in Parkinson's disease

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