社会的な情報が知覚判断に及ぼす効果の検討

检查社会信息对感知判断的影响

• 批准号: 18F18008
• 负责人: 四本 裕子
• 金额: $ 1.47万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-25 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18F18008/
• 关键词: social influence; conformity; perception; social information; fMRI; decoding

The main goal of the present study was to answer this question. In the present study, we collected fMRI data while participants were performing a modified random dot motion task. The experimental setting and the instruction lured them into believing that their task and their partner's task were synchronised. Therefore, we were able to show them partner's answer to each stimulus. Participants observed the same stimulus twice and made the judgements twice as well. One stimulus appeared before, and another one appeared after receive the partner's answer or the random answer. We trained classifier to identify neural patterns in V1, V2, V3, and MT while each pattern corresponds to one moving direction participants perceived and then used the classifier to test whether neural patterns were the same or different in trials when participants showed conformity to partner or to random answer. The results showed that when participants change their answer from 'moving right' to 'moving left', the neural patterns in V1, V3 and MT changed from the 'right pattern' to the 'left pattern', and vice versa. Therefore, our results suggest that one of the reasons why people show social conformity in a visual perception task is because social influence penetrate early perception processes, and it makes people perceive differently.

本研究的主要目的就是回答这个问题。在目前的研究中，我们收集了参与者在执行修改的随机点运动任务时的fMRI数据。实验环境和指导引诱他们相信他们的任务和他们伴侣的任务是同步的。因此，我们能够向他们展示合作伙伴对每种刺激的答案。参与者观察了两次相同的刺激，并做出了两次判断。一种刺激出现在之前，另一种出现在收到伴侣的回答或随机回答之后。我们训练分类器来识别V1、V2、V3和MT中的神经模式，每个模式对应于参与者感知的一个移动方向，然后使用分类器测试当参与者对伙伴或随机答案表现出一致性时，神经模式是否相同或不同。结果表明，当参与者的答案从“右移”变为“左移”时，V1、V3和MT的神经模式从“右模式”变为“左模式”，反之亦然。因此，我们的结果表明，人们在视觉知觉任务中表现出社会一致性的原因之一是因为社会影响渗透到早期的知觉过程，使人们的知觉发生变化。

项目成果

The Influence of social information on visual perceptual decision making.

社会信息对视觉感知决策的影响。

• 发表时间: 2019
• 作者: Lin;W.-J.;& Yotsumono Y.
• 通讯作者: & Yotsumono Y.

Brain pattern in V1 changes after receiving social information

接收社交信息后 V1 的大脑模式发生变化

• 发表时间: 2019
• 作者: Lin;W.-J.;& Yotsumono Y
• 通讯作者: & Yotsumono Y