Different activation signatures in the primary sensorimotor and higher-level regions for haptic three-dimensional curved surface exploration.

Autor: Yang J; Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama 700-8530, Japan; Section on Functional Imaging Methods, National Institute of Mental Health, Bethesda, MD, USA. Electronic address: yang@okayama-u.ac.jp., Molfese PJ; Section on Functional Imaging Methods, National Institute of Mental Health, Bethesda, MD, USA., Yu Y; Section on Functional Imaging Methods, National Institute of Mental Health, Bethesda, MD, USA; Center for Information and Neural Networks, National Institute of Information and Communications Technology, Suita, Osaka, Japan; Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, Japan., Handwerker DA; Section on Functional Imaging Methods, National Institute of Mental Health, Bethesda, MD, USA., Chen G; Scientific and Statistical Computational Core, National Institute of Mental Health, Bethesda, MD, USA., Taylor PA; Scientific and Statistical Computational Core, National Institute of Mental Health, Bethesda, MD, USA., Ejima Y; Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama 700-8530, Japan., Wu J; Beijing Institute of Technology, Beijing, China; Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama 700-8530, Japan., Bandettini PA; Section on Functional Imaging Methods, National Institute of Mental Health, Bethesda, MD, USA; Functional MRI Core Facility, National Institute of Mental Health, Bethesda, MD, USA.
Jazyk: angličtina
Zdroj: NeuroImage [Neuroimage] 2021 May 01; Vol. 231, pp. 117754. Date of Electronic Publication: 2021 Jan 14.
DOI: 10.1016/j.neuroimage.2021.117754
Abstrakt: Haptic object perception begins with continuous exploratory contact, and the human brain needs to accumulate sensory information continuously over time. However, it is still unclear how the primary sensorimotor cortex (PSC) interacts with these higher-level regions during haptic exploration over time. This functional magnetic resonance imaging (fMRI) study investigates time-dependent haptic object processing by examining brain activity during haptic 3D curve and roughness estimations. For this experiment, we designed sixteen haptic stimuli (4 kinds of curves × 4 varieties of roughness) for the haptic curve and roughness estimation tasks. Twenty participants were asked to move their right index and middle fingers along the surface twice and to estimate one of the two features-roughness or curvature-depending on the task instruction. We found that the brain activity in several higher-level regions (e.g., the bilateral posterior parietal cortex) linearly increased as the number of curves increased during the haptic exploration phase. Surprisingly, we found that the contralateral PSC was parametrically modulated by the number of curves only during the late exploration phase but not during the early exploration phase. In contrast, we found no similar parametric modulation activity patterns during the haptic roughness estimation task in either the contralateral PSC or in higher-level regions. Thus, our findings suggest that haptic 3D object perception is processed across the cortical hierarchy, whereas the contralateral PSC interacts with other higher-level regions across time in a manner that is dependent upon the features of the object.
Competing Interests: Declaration of Competing Interest All authors declare that they have no other competing interests.
(Copyright © 2021. Published by Elsevier Inc.)
Databáze: MEDLINE
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