An event-related potential study on the time course of mental rotation in upper-limb amputees

• Verfasst von: Lyu, Yuanyuan [VerfasserIn]
• Verfasst von: Flor, Herta [VerfasserIn]
• Titel: An event-related potential study on the time course of mental rotation in upper-limb amputees
• Verf.angabe: Yuanyuan Lyu, Xiaoli Guo, Robin Bekrater-Bodmann, Herta Flor, Shanbao Tong
• E-Jahr: 2017
• Jahr: May 2017
• Umfang: 7 S.
• Fussnoten: Gesehen am 30.04.2018
• Titel Quelle: Enthalten in: Clinical neurophysiology
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1999
• Jahr Quelle: 2017
• Band/Heft Quelle: 128(2017), 5, Seite 744-750
• ISSN Quelle: 1872-8952
• DOI: doi:10.1016/j.clinph.2017.02.008
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Amputation
• Sach-SW: Event-related potential (ERP)
• Sach-SW: Mental rotation
• Sach-SW: N200
• Sach-SW: P300
• Sach-SW: Rotation-related negativity (RRN)
• K10plus-PPN: 1572471913

Abstract

Objective: Mental rotation of body parts involves sequential cognitive processes, including visual processing, categorization and the mental rotation process itself. However, how these processes are affected by the amputation of a limb is still unclear. Methods: Twenty-five right upper-limb amputees and the same number of matched healthy controls participated in a hand mental rotation task. Thirty-two-channel electroencephalography (EEG) was recorded and the event-related potentials (ERPs) were analyzed. Results: In the early visual processing phase, amputees and controls showed a similar P100. During the categorization phase, the amputees exhibited a decreased N200 compared with controls, and the decline was positively correlated with the time since amputation. In the mental rotation phase, controls had a larger ERP for the right upright hand than for the left upright hand, while amputees had a larger ERP for the left (intact) upright hand than for the right (affected) upright hand. Conclusions: Early visual processing was not affected by limb amputation. However, the perceptual salience of hand pictures decreased and the intact hand gained more significance in the amputees. Significance: Event-related potentials had the capability of showing the differences in categorization and mental rotation phases between amputees and controls.