Implicit self-other discrimination affects the interplay between multisensory affordances of mental representations of faces

Autor: Michael Notter, Silvio Ionta, David Zeugin, Norhan Arfa, Micah M. Murray
Rok vydání: 2017
Předmět:
Male
Universities
Identity (social science)
Somatosensory system
Facial recognition system
Brain mapping
Choice Behavior
050105 experimental psychology
Mental rotation
Developmental psychology
03 medical and health sciences
Behavioral Neuroscience
0302 clinical medicine
Discrimination
Psychological
Reaction Time
Humans
0501 psychology and cognitive sciences
Affordance
Students
Brain Mapping
05 social sciences
Electroencephalography
Recognition
Psychology
Gaze
Face
Choice Behavior/physiology
Discrimination (Psychology)/physiology
Evoked Potentials
Visual/physiology
Facial Recognition/physiology
Female
Photic Stimulation
Reaction Time/physiology
Recognition (Psychology)/physiology
Eyetraking
Face inversion effect
Multisensory representations
Proprioception
Self-other discrimination
Vision
Mental representation
Evoked Potentials
Visual
Psychology
Facial Recognition
030217 neurology & neurosurgery
Cognitive psychology
Zdroj: Behavioural brain research, vol. 333, pp. 282-285
ISSN: 1872-7549
Popis: Face recognition is an apparently straightforward but, in fact, complex ability, encompassing the activation of at least visual and somatosensory representations. Understanding how identity shapes the interplay between these face-related affordances could clarify the mechanisms of self-other discrimination. To this aim, we exploited the so-called "face inversion effect" (FIE), a specific bias in the mental rotation of face images (of other people): with respect to inanimate objects, face images require longer time to be mentally rotated from the upside-down. Via the FIE, which suggests the activation of somatosensory mechanisms, we assessed identity-related changes in the interplay between visual and somatosensory affordances between self- and other-face representations. Methodologically, to avoid the potential interference of the somatosensory feedback associated with musculoskeletal movements, we introduced the tracking of gaze direction to record participants' response. Response times from twenty healthy participants showed the larger FIE for self- than other-faces, suggesting that the impact of somatosensory affordances on mental representation of faces varies according to identity. The present study lays the foundations of a quantifiable method to implicitly assess self-other discrimination, with possible translational benefits for early diagnosis of face processing disturbances (e.g. prosopagnosia), and for neurophysiological studies on self-other discrimination in ethological settings.
Databáze: OpenAIRE
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