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

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

Kuvaus

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 r50.49; 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.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut4061–4068
JulkaisuHuman Brain Mapping
Vuosikerta37
Numero11
TilaJulkaistu - marraskuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Tutkimusalat

  • cinema, data-analysis, embodiment, MEG, Neurocinematics, touch

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