Effect of visual cues on the resolution of perceptual ambiguity in Parkinson's disease and normal aging.
Effect of visual cues on the resolution of perceptual ambiguity in Parkinson's disease and normal aging.
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DOI：
10.1017/s1355617715000065
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发表时间：
2015-02
期刊：
影响因子：
--
通讯作者：
Cronin-Golomb A
中科院分区：
文献类型：
--
作者：
Díaz-Santos M;Cao B;Mauro SA;Yazdanbakhsh A;Neargarder S;Cronin-Golomb A
帕金森氏病(PD)和正常衰老与视觉感知的变化有关，包括依赖外部线索来指导行为。这就提出了一个问题，即这些群体在消除信息歧义时在多大程度上使用视觉线索。27名帕金森病患者、23名正常对照成人(NC)和20名年轻人(YA)被展示了一个Necker立方体，其中一个面孔通过加厚定义面孔的线条来突出显示。假设视觉线索将帮助PD和NC对双稳态知觉施加更好的控制。有三种情况，包括被动观看和两种意志控制条件(保持一个知觉在前面；切换：加快两者之间的交替)。在保持状态下，线索与任务指令一致或不一致。在被动观看下，PD组和NC组的平均优势持续时间(每次感知所花费的时间)相似，而YA组更短。与NC相比，PD和YA在保持线索一致的条件下增加了优势持续时间，这意味着适当的线索有助于PD而不是NC保持一种知觉解释。相反，在转换条件下，NC和YA缩短了相对于PD的优势持续时间，这意味着线索的使用有助于NC而不是PD加速知觉之间的转换。低水平线索的提供对帕金森病的意志控制有不同于正常衰老的影响，只有在任务特定的条件下，这种线索的使用才能促进知觉模糊的解决。
Parkinson’s disease (PD) and normal aging have been associated with changes in visual perception, including reliance on external cues to guide behavior. This raises the question of the extent to which these groups use visual cues when disambiguating information. Twenty-seven individuals with PD, 23 normal control adults (NC), and 20 younger adults (YA) were presented a Necker cube in which one face was highlighted by thickening the lines defining the face. The hypothesis was that the visual cues would help PD and NC to exert better control over bistable perception. There were three conditions, including passive viewing and two volitional-control conditions (hold one percept in front; and switch: speed up the alternation between the two). In the Hold condition, the cue was either consistent or inconsistent with task instructions. Mean dominance durations (time spent on each percept) under passive viewing were comparable in PD and NC, and shorter in YA. PD and YA increased dominance durations in the Hold cue-consistent condition relative to NC, meaning that appropriate cues helped PD but not NC hold one perceptual interpretation. By contrast, in the Switch condition, NC and YA decreased dominance durations relative to PD, meaning that the use of cues helped NC but not PD in expediting the switch between percepts. Provision of low-level cues has effects on volitional control in PD that are different from in normal aging, and only under task-specific conditions does the use of such cues facilitate the resolution of perceptual ambiguity.
影响因子：
3.7
作者：
Seichepine DR;Neargarder S;McCallum ME;Tabor K;Riedel TM;Gilmore GC;Cronin-Golomb A
通讯作者：
Cronin-Golomb A