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Overconfidence in visual perception in parkinson's disease.

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Title: Overconfidence in visual perception in parkinson's disease.
Authors: Halperin, Orly (AUTHOR), Karni, Roie (AUTHOR), Israeli‐Korn, Simon (AUTHOR), Hassin‐Baer, Sharon (AUTHOR), Zaidel, Adam (AUTHOR)
Source: European Journal of Neuroscience. Mar2021, Vol. 53 Issue 6, p2027-2039. 13p. 1 Diagram, 2 Graphs.
Subjects: Visual perception, Parkinson's disease, Differentiation (Cognition), Visual discrimination, Young adults, Sensory conflict
Abstract: Increased dependence on visual cues in Parkinson's disease (PD) can unbalance the perception‐action loop, impair multisensory integration, and affect everyday function of PD patients. It is currently unknown why PD patients seem to be more reliant on their visual cues. We hypothesized that PD patients may be overconfident in the reliability (precision) of their visual cues. In this study we tested coherent visual motion perception in PD, and probed subjective (self‐reported) confidence in their visual motion perception. Twenty patients with idiopathic PD, 21 healthy aged‐matched controls and 20 healthy young adult participants were presented with visual stimuli of moving dots (random dot kinematograms). They were asked to report: (1) whether the aggregate motion of dots was to the left or to the right, and (2) how confident they were that their perceptual discrimination was correct. Visual motion discrimination thresholds were similar (unimpaired) in PD compared to the other groups. By contrast, PD patients were significantly overconfident in their visual perceptual decisions (p =.002 and p <.001 vs. the age‐matched and young adult groups, respectively). These results suggest intact visual motion perception, but overestimation of visual cue reliability, in PD. Overconfidence in visual (vs. other, e.g., somatosensory) cues could underlie increased visual dependence and impaired multisensory/sensorimotor integration in PD. It could thereby contribute to gait and balance impairments, and affect everyday activities, such as driving. Future work should investigate and compare PD confidence in somatosensory function. A better understanding of altered sensory reliance might open up new avenues to treat debilitating PD symptoms. [ABSTRACT FROM AUTHOR]
Copyright of European Journal of Neuroscience is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Overconfidence in visual perception in parkinson&#39;s disease.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Journal+of+Neuroscience%22&quot;&gt;European Journal of Neuroscience&lt;/searchLink&gt;. Mar2021, Vol. 53 Issue 6, p2027-2039. 13p. 1 Diagram, 2 Graphs.
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– Name: Abstract
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  Data: Increased dependence on visual cues in Parkinson&#39;s disease (PD) can unbalance the perception‐action loop, impair multisensory integration, and affect everyday function of PD patients. It is currently unknown why PD patients seem to be more reliant on their visual cues. We hypothesized that PD patients may be overconfident in the reliability (precision) of their visual cues. In this study we tested coherent visual motion perception in PD, and probed subjective (self‐reported) confidence in their visual motion perception. Twenty patients with idiopathic PD, 21 healthy aged‐matched controls and 20 healthy young adult participants were presented with visual stimuli of moving dots (random dot kinematograms). They were asked to report: (1) whether the aggregate motion of dots was to the left or to the right, and (2) how confident they were that their perceptual discrimination was correct. Visual motion discrimination thresholds were similar (unimpaired) in PD compared to the other groups. By contrast, PD patients were significantly overconfident in their visual perceptual decisions (p =.002 and p &lt;.001 vs. the age‐matched and young adult groups, respectively). These results suggest intact visual motion perception, but overestimation of visual cue reliability, in PD. Overconfidence in visual (vs. other, e.g., somatosensory) cues could underlie increased visual dependence and impaired multisensory/sensorimotor integration in PD. It could thereby contribute to gait and balance impairments, and affect everyday activities, such as driving. Future work should investigate and compare PD confidence in somatosensory function. A better understanding of altered sensory reliance might open up new avenues to treat debilitating PD symptoms. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Journal of Neuroscience is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=149598224
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      – Type: doi
        Value: 10.1111/ejn.15093
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 13
        StartPage: 2027
    Subjects:
      – SubjectFull: Visual perception
        Type: general
      – SubjectFull: Parkinson's disease
        Type: general
      – SubjectFull: Differentiation (Cognition)
        Type: general
      – SubjectFull: Visual discrimination
        Type: general
      – SubjectFull: Young adults
        Type: general
      – SubjectFull: Sensory conflict
        Type: general
    Titles:
      – TitleFull: Overconfidence in visual perception in parkinson's disease.
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            NameFull: Halperin, Orly
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            NameFull: Karni, Roie
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            NameFull: Israeli‐Korn, Simon
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            NameFull: Hassin‐Baer, Sharon
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              M: 03
              Text: Mar2021
              Type: published
              Y: 2021
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              Value: 53
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