The influence of arm posture on the Uznadze haptic aftereffect

FRISCO, Francesca, DANEYKO, Olga, MARAVITA, Angelo and ZAVAGNO, Daniele (2023). The influence of arm posture on the Uznadze haptic aftereffect. Journal of Experimental Psychology: Human Perception and Performance, 49 (9), 1271-1279.

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The role of arm posture in the Uznadze haptic aftereffect is investigated: two identical test stimuli (i.e., spheres, TS) clenched simultaneously appear haptically different in size after hands have been adapted to two spheres (adapting stimuli, AS) differing in size: the hand adapted to a small AS feels TS bigger than the hand adapted to a big AS. In two experiments, participants evaluated the haptic impressions of two TS after adaptation by finding their match on a visual scale. In Experiment 1, all tasks were carried out with arms either uncrossed or crossed. In Experiment 2, only the matching task was performed with arms either uncrossed or crossed while adaptation was conducted by continuously changing arm posture from uncrossed to crossed and vice versa. The illusion occurred irrespectively of arm posture; however, its magnitude was smaller when adaptation was carried out in the classical condition of uncrossed arms. Results are discussed in light of two functional mechanisms: low-level somatotopic mapping (i.e., stimuli conformation) and high-level level factors (i.e., arm posture) that could modulate the haptic perception. (PsycInfo Database Record (c) 2023 APA, all rights reserved)

Item Type: Article
Uncontrolled Keywords: 1701 Psychology; 1702 Cognitive Sciences; Experimental Psychology; 5202 Biological psychology; 5204 Cognitive and computational psychology
Identification Number: A critical literature review of security and privacy in smart home healthcare schemes adopting IoT & blockchain: problems, challenges and solutions
Page Range: 1271-1279
SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 12 Dec 2023 11:45
Last Modified: 15 Dec 2023 16:00

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