Dataset - Action-related aspects of peripersonal space in upper-limb segmentary exclusion syndrome: a reachability-judgment study

<p dir="ltr">This record contains the de-identified behavioural data and the analysis code supporting the study <i>"Reachability judgments in upper-limb segmentary exclusion syndrome explore action-related aspects of peripersonal space"</i> (Herbé et al.).</p><p dir="ltr">The study investigates action-related aspects of peripersonal space in upper-limb segmentary exclusion syndrome (UL-SES), a condition characterised by persistent underuse of a limb segment without an identifiable neurological lesion, in comparison with healthy participants.

Peripersonal space was probed indirectly with a reachability-judgment (RJ) task adapted from Gouzien et al. (2017): seated and without moving, participants judged whether visually presented targets were reachable. Twenty-five target positions spanning the objective reachable limit were each repeated five times per side (125 trials per side). The main outcome is the RJ-error, the perceived maximum reachable distance relative to the objective maximum reachable distance, expressed as a percentage; a positive value indicates overestimation of the reachable space.</p><p dir="ltr">The record includes the raw experimental logs (one file per participant and side), the reconstructed trial-level dataset (one row per trial), the per-participant aggregate results, the original MATLAB processing scripts, an R script for the mixed-effects and aggregate analyses, and a Python script for the sensitivity and robustness analyses, together with a documentation README and a checksum manifest.</p><p dir="ltr">Fifteen UL-SES and thirty healthy participants were analysed.