Acquisition of multiple prior distributions in tactile temporal order judgment.
Acquisition of multiple prior distributions in tactile temporal order judgment.
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DOI：
10.3389/fpsyg.2012.00276
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发表时间：
2012
影响因子：
3.8
通讯作者：
Kitazawa S
中科院分区：
文献类型：
--
作者：
Nagai Y;Suzuki M;Miyazaki M;Kitazawa S
贝叶斯估计理论提出，大脑获取任务的先验分布，并将其与感觉信号相结合，以最大限度地减少感觉噪声的影响。心理物理学研究表明，我们的大脑实际上在各种感觉运动任务中执行贝叶斯估计。然而，这些研究只在一个任务期间对参与者施加了一个先验分布。在这项研究中，我们研究了在两种触觉刺激的时间顺序判断中获得多重先验分布的条件。在实验1中，刺激间隔从两种与颜色线索（分别为绿色和红色）相关的先验分布中随机选择（偏向于更早的右手和更早的左手）之一。虽然这两种先验的获得不是由颜色线索单独激活的，但当参与者根据颜色线索转移他们的目光（向上或向下）时，这是很重要的。然而，当参与者动嘴（张开或闭上）时，多重先验的获得并不显著。在实验2中，我们使用空间线索（上、下）来识别哪个眼睛位置或视网膜线索位置对实验1中依赖眼球运动的多重先验习得至关重要。当参与者将目光移向线索时（即，视网膜上的线索位置在先验中是恒定的），以及当参与者不转移他们的目光时（即，视网膜上的线索位置根据先验而变化），这两个先验的习得是显著的。因此，眼睛和视网膜的线索位置都是有效的获取多个先验。基于先前的神经生理学报告，我们讨论了可能的神经关联，有助于获得多个先验。
The Bayesian estimation theory proposes that the brain acquires the prior distribution of a task and integrates it with sensory signals to minimize the effect of sensory noise. Psychophysical studies have demonstrated that our brain actually implements Bayesian estimation in a variety of sensory-motor tasks. However, these studies only imposed one prior distribution on participants within a task period. In this study, we investigated the conditions that enable the acquisition of multiple prior distributions in temporal order judgment of two tactile stimuli across the hands. In Experiment 1, stimulation intervals were randomly selected from one of two prior distributions (biased to right hand earlier and biased to left hand earlier) in association with color cues (green and red, respectively). Although the acquisition of the two priors was not enabled by the color cues alone, it was significant when participants shifted their gaze (above or below) in response to the color cues. However, the acquisition of multiple priors was not significant when participants moved their mouths (opened or closed). In Experiment 2, the spatial cues (above and below) were used to identify which eye position or retinal cue position was crucial for the eye-movement-dependent acquisition of multiple priors in Experiment 1. The acquisition of the two priors was significant when participants moved their gaze to the cues (i.e., the cue positions on the retina were constant across the priors), as well as when participants did not shift their gazes (i.e., the cue positions on the retina changed according to the priors). Thus, both eye and retinal cue positions were effective in acquiring multiple priors. Based on previous neurophysiological reports, we discuss possible neural correlates that contribute to the acquisition of multiple priors.
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影响因子：
2.1
作者：
Wolpert, Daniel M.
通讯作者：
Wolpert, Daniel M.
影响因子：
64.8
作者：
Körding, KP;Wolpert, DM
通讯作者：
Wolpert, DM
DOI：
10.1073/pnas.93.9.3843
发表时间：
1996-04-30
影响因子：
11.1
作者：
Gandolfo, F;MussaIvaldi, FA;Bizzi, E
通讯作者：
Bizzi, E
影响因子：
56.9
作者：
DUFFY, FH;BURCHFIE.JL
通讯作者：
BURCHFIE.JL
影响因子：
25
作者：
Miyazaki, Makoto;Yamamoto, Shinya;Kitazawa, Shigeru
通讯作者：
Kitazawa, Shigeru