Dataset and Codes used for "The line bisection bias stems from left-side underawareness, not from right-side hyperattention"
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https://data.mendeley.com/datasets/tbpb2hj3fn/1
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This folder contains the dataset of aptient and healthy participant data gathered for the aforementioned study. We examined whether the bias in line bisection displayed by many patients with visuospatial neglect is more in line with an underawareness of the left side of the line, or of hyperattention towards the right. To this end, we measures four groups: neglect patients with line bisection bias, neglect patients without line bisection bias, patients with a right-sided stroke without neglect, and healthy controls, in several tasks involving horizontal lines: Line bisection, a line 'segmentation task', two number line tasks, and a verbal number bisection task. For each line task, the number in the cell denotes where on the line the mark was placed in centimetres from the left (on a 20cm line). For example, if a cell says "0.9", the mark was placed 9mm from the left end of the line, if it says "12.2", it was placed 122mm from the left end of the line. Columns starting with "4T" denote individual marks of segmenting the line into 4 equal parts, "3T" individual trials of segmenting the line into 3 equal parts. the number following this (1-5) denotes the trial itself (there were up to 5 trials in total, if patients could do so many), and the number after "Prop" denotes whether it is the first, second or third line from the left. E.g., "4T2_Prop3" would denote: The third line from the left (i.e., the 3/4 line) of the second trial of the quarters segmentation task. The "fractions" number line task trials are denoted by the resepctive fraction followed by the trial (again, 1-5): For example, 1DIV3_2 denotes the second trial of marking "1/3". For the "whole numbers" number line task, the number following "BNL" denotes the number to mark, again followed by the respective trial ("BNL6_1" is the first trial of marking 6 on the line). Finally, all columns denoting the German words "Auf" and "Ab" denote number bisection trials where numbers were either said in an increasing order ("Auf") or decreasing order ("Ab"), whereby cells denote the number said by the participant for that trial. Finally, individual R codes were written for each task, as well as individual visualisation codes. The codes should be sufficiently commented and thus do not need furhter description here.
提供机构:
Stefan Smaczny



