Number comparison task
收藏资源简介：
This dataset contains the raw fMRI data accompanying the paper "Overlapping but separate number representations in the intraparietal sulcus – probing format- and modality-independence in sighted Braille readers" Please cite the above paper if you use this data. The dataset includes: 1. T1-weighted images for each subject 2. functional whole-brain EPI data from 8 runs for each participant 3. event files containing onsets, durations and trial types for all trials in the corresponding run. Twenty-five healthy individuals (all female; median age = 25, range = 22–32) participated in the experiment. All participants were right-handed and monolingual, with normal or corrected-to-normal vision. Participants were students or graduates with a minimum of 3 years of higher education (median years of higher education = 5; range = 3–12). In this experiment we used a rapid block design. The numerosities used were: 2,4,6 and 8 and were presented either as visual Arabic digits, visual sets of dots, or tactile Braille numbers. - Each run lasted 402 seconds and contained 6 stimulus sequences separated by fixation - Each sequence contained 12 blocks of stimuli - Each block contained 4–6 trials of the same kind - In each block, participants had to indicate whether the presented numerosity was higher or lower than 5 by pressing one of the two buttons on the response pad For a full description of the paradigm and the analysis we chose to perform, please see the paper.
本数据集包含配套于论文《顶内沟中重叠但分离的数字表征——探究视力正常的盲文阅读者的格式与通道独立性》（Overlapping but separate number representations in the intraparietal sulcus – probing format- and modality-independence in sighted Braille readers）的原始功能磁共振成像（functional magnetic resonance imaging, fMRI）数据，若使用本数据集，请引用上述论文。 本数据集包含以下内容： 1. 所有被试的T1加权成像（T1-weighted images）数据 2. 每名参与者8次扫描任务的全脑功能回波平面成像（echo-planar imaging, EPI）数据 3. 事件文件，包含对应扫描任务中所有试次的起始时刻、持续时长以及试次类型。 本实验共招募25名健康成年人，均为女性，年龄中位数为25岁，年龄范围为22~32岁。所有被试均为右利手单语使用者，视力正常或经矫正后可达正常水平。被试均为接受过至少3年高等教育的学生或毕业生，其高等教育年限中位数为5年，范围为3~12年。 本实验采用快速区组设计。实验使用的数字量为2、4、6和8，分别以视觉阿拉伯数字、视觉点阵或触觉盲文数字三种格式呈现。 - 单次扫描任务时长为402秒，包含6个刺激序列，序列间以固定注视休息阶段分隔 - 每个刺激序列包含12个刺激区组 - 每个刺激区组包含4~6个同类型试次 - 每个刺激区组中，被试需通过反应按键面板上的两个按键之一，判断当前呈现的数字量高于还是低于5 若需了解实验范式与本研究采用的分析方法的完整细节，请参阅上述论文。
