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1.  Eye movements in Visual Search Indicate Impaired Saliency Processing in Parkinson's Disease 
Progress in brain research  2008;171:559-562.
Previous studies have produced contradictory evidence on the nature of the visual search impairment in patients with Parkinson's Disease (PD). Eye movements were measured during multi-target search in 9 individuals with mild to moderate PD. Subjects were asked to click on a response button whenever they judged they were fixating a target for the first time. Compared to age-matched healthy volunteers, PD patients were impaired at efficient search (detecting ‘+’s amongst ‘Ls’) but not inefficient search (‘T's amongst ‘Ls’). However, these patients had normal memory for locations as indexed by their rate of re-clicking on previously inspected locations. We suggest that the pattern of gaze for efficient search may reflect impaired saliency processing in PD.
doi:10.1016/S0079-6123(08)00679-1
PMCID: PMC2655700  PMID: 18718353
Visual Search; Sacccades; Parkinson's Disease; Saliency
2.  Eye movements in visual search indicate impaired saliency processing in Parkinson's disease 
Progress in Brain Research  2008;171():559-562.
Previous studies have produced contradictory evidence on the nature of the visual search impairment in patients with Parkinson's disease (PD). Eye movements were measured during multi-target search in nine individuals with mild-to-moderate PD. Subjects were asked to click on a response button whenever they judged they were fixating a target for the first time. Compared to age-matched healthy volunteers, PD patients were impaired at efficient search (detecting “+”s amongst “L”s) but not inefficient search (“T”s amongst “L”s). However, these patients had normal memory for locations as indexed by their rate of re-clicking on previously inspected locations. We suggest that the pattern of gaze for efficient search may reflect impaired saliency processing in PD.
doi:10.1016/S0079-6123(08)00679-1
PMCID: PMC2655700  PMID: 18718353
visual search; saccades; Parkinson's disease; saliency

Results 1-2 (2)