Picture-Word Interference Dataset

This study was conducted at the Rotman Research Institute at Baycrest Hospital in Toronto, Canada.

This dataset contains 30 healthy young adults' MEG (CTF), sMRI, and behavioural data on a picture-word interference (PWI) task. Subjects were shown images of objects one by one and were instructed to retrieve the name of the pictures covertly and judge whether the name ends in a target sound given at the beginning of each task block, by pressing the yes or no buttons with their right hand. Whenever they see an image, they will often also hear a distractor word played through their earphone. The picture and word could be phonologically related, semantically related, or unrelated.

There were 3 runs of the PWI task for each participant. Each run contained 120 trials, containing an equal number of trials for each picture-word condition. Behaviourally, the reaction time and accuracy of their button-pressing response were recorded. Meanwhile, the MEG data was epoched to the picture onset and response onset for event-related analyses. Each subject obtained their own structural MRI for MEG source localization.

Corresponding analysis code can be found under the code folder, with the "analysis walkthrough" documenting more detailed explanation of the analysis.

本研究于加拿大多伦多Baycrest医院（Baycrest Hospital）的Rotman研究中心（Rotman Research Institute）开展。

本数据集包含30名健康青年成人的脑磁图（Magnetoencephalography, MEG, CTF）、结构磁共振成像（structural Magnetic Resonance Imaging, sMRI）以及图片-词语干扰任务（picture-word interference, PWI）行为学数据。实验流程如下：依次向被试呈现物体图片，要求其隐蔽命名图片（即不出声默念图片名称），并根据每个任务区块起始时给出的目标音素，判断图片名称是否以该音素结尾，随后用右手按下对应“是”或“否”按键。每当呈现图片时，被试同时会通过耳机听到干扰词。图片与干扰词之间可分为语音相关、语义相关及无相关三种条件。

每名被试需完成3轮PWI任务，每轮包含120组试次，各图片-词语条件下的试次数量均等。行为学层面，研究记录了被试按键反应的反应时与正确率。同时，以图片呈现起始时刻与反应起始时刻为时间基准，对MEG数据进行试次分段处理，以用于事件相关分析。每名被试均提供了自身的结构磁共振成像数据，用于MEG源定位分析。

相关分析代码可于代码文件夹中获取，其中“分析流程说明（analysis walkthrough）”文档对分析方法进行了更为详细的阐释。

搜集汇总

背景与挑战

背景概述

该数据集包含30名健康年轻成年人的多模态神经影像数据，聚焦于图片-词汇干扰任务，研究语言处理中的干扰效应。数据涵盖MEG、sMRI和行为测量，实验设计涉及语音、语义相关条件，适用于事件相关分析和源定位研究。数据集规模较大，已公开共享，支持认知神经科学领域的可重复研究。