Haptic contents of a movie dynamically engage the spectator's sensorimotor cortex

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http://hdl.handle.net/10138/169266

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Lankinen , K , Smeds , E , Tikka , P , Pihko , E , Hari , R & Koskinen , M 2016 , ' Haptic contents of a movie dynamically engage the spectator's sensorimotor cortex ' , Human Brain Mapping , vol. 37 , no. 11 , pp. 4061-4068 . https://doi.org/10.1002/hbm.23295

Title: Haptic contents of a movie dynamically engage the spectator's sensorimotor cortex
Author: Lankinen, Kaisu; Smeds, Eero; Tikka, Pia; Pihko, Elina; Hari, Riitta; Koskinen, Miika
Contributor: University of Helsinki, Medicum
Date: 2016-11
Language: eng
Number of pages: 8
Belongs to series: Human Brain Mapping
ISSN: 1065-9471
URI: http://hdl.handle.net/10138/169266
Abstract: Observation of another person's actions and feelings activates brain areas that support similar functions in the observer, thereby facilitating inferences about the other's mental and bodily states. In real life, events eliciting this kind of vicarious brain activations are intermingled with other complex, ever-changing stimuli in the environment. One practical approach to study the neural underpinnings of real-life vicarious perception is to image brain activity during movie viewing. Here the goal was to find out how observed haptic events in a silent movie would affect the spectator's sensorimotor cortex. The functional state of the sensorimotor cortex was monitored by analyzing, in 16 healthy subjects, magnetoencephalographic (MEG) responses to tactile finger stimuli that were presented once per second throughout the session. Using canonical correlation analysis and spatial filtering, consistent single-trial responses across subjects were uncovered, and their waveform changes throughout the movie were quantified. The long-latency (85-175 ms) parts of the responses were modulated in concordance with the participants' average moment-by-moment ratings of own engagement in the haptic content of the movie (correlation r=0.49; ratings collected after the MEG session). The results, obtained by using novel signal-analysis approaches, demonstrate that the functional state of the human sensorimotor cortex fluctuates in a fine-grained manner even during passive observation of temporally varying haptic events. Hum Brain Mapp 37:4061-4068, 2016. (c) 2016 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc.
Subject: canonical correlation
magnetoencephalography (MEG)
movie
somatosensory cortex
sensorimotor cortex
spatial filtering
tactile perception
PRIMARY SOMATOSENSORY CORTEX
TOUCH
ACTIVATIONS
SEPARATION
SIMULATION
VISION
HUMANS
BRAIN
SI
3112 Neurosciences
3124 Neurology and psychiatry
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