2026-03-09T05:41:24Z https://muroran-it.repo.nii.ac.jp/oai

oai:muroran-it.repo.nii.ac.jp:02000223 2025-04-21T02:43:51Z 216:1711004795784 46

Comparison of peripersonal space in front and rear spaces Teraoka Ryo 寺岡　諒 Kuroda Naoki Kojima Rinka Teramoto Wataru open access © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024 Peripersonal space Audiotactile interaction Rear space Auditory distance perception The space immediately around the body, referred to as the peripersonal space (PPS), plays a crucial role in interactions with external objects and in avoiding unsafe situations. This study aimed to investigate whether the size of the PPS changes depending on direction, with a particular focus on the disparity between the front and rear spaces. A vibrotactile stimulus was presented to measure PPS while a task-irrelevant auditory stimulus (probe) approached the participant. In addition, to evaluate the effect of the probe, a baseline condition was used in which only tactile stimuli were presented. The results showed that the auditory facilitation effect of the tactile stimulus was greater in the rear condition than in the front condition. Conversely, the performance on tasks related to auditory distance perception and sound speed estimation did not differ between the two directions, indicating that the difference in the auditory facilitation effect between directions cannot be explained by these factors. These findings indicate that the strength of audio-tactile integration is greater in the rear space compared to the front space, suggesting that the representation of the PPS differed between the front and rear spaces. Springer 2025-02-06 2024-02-06 eng journal article AM http://hdl.handle.net/10258/0002000223 https://muroran-it.repo.nii.ac.jp/records/2000223 10.1007/s00221-024-06782-2 0014-4819 Experimental Brain Research 242 4 797 808 https://muroran-it.repo.nii.ac.jp/record/2000223/files/Comparison of peripersonal space in front and rear spaces.pdf application/pdf 938 KB 2025-02-06 https://muroran-it.repo.nii.ac.jp/record/2000223/files/221_2024_6782_MOESM1_ESM.pdf application/pdf 515 KB 2025-02-06