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 |
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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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