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Global riactice Leader's in Brain Science

8/21 (Wed) 15:00 Special Seminar
Name : 관리자 | Date : 2019.08.12 16:27 | Views : 281

Title: Multisensory integration and perceptual recalibration in humans.

Speaker: Ph.D. Hame Park. (Bielefeld University)(Host : Hyeon-Ae Jeon)


Time: 15:00, August 21 (Wed), 2019
        

Venue: Room 114, Building E4, DGIST


Abstract :We flexibly interact with the environment by deriving a weighted combination of multisensory information we perceive, and by adapting to discrepancies in the sensory world, whereby we judge unisensory cues relative to preceding multisensory evidence. While both facets of perception are key for behavior, it remains unknown whether they arise from a common mechanism or neural substrate. In this talk I will present our study investigating the neural substrates of sensory integration and trial-by-trial perceptual recalibration. We measured whole-brain activity using magnetoencephalography while human participants performed an audio-visual ventriloquist task. Using single trial multivariate analysis, we localized the perceptually-relevant encoding of multisensory information. While we found neural signatures of multisensory integration within temporal and parietal regions, only medial superior parietal activity retained past sensory information and combined this with current evidence to mediate perceptual biases. These results highlight a common neural substrate of sensory integration and trial-by-trial perceptual recalibration, and reveal a role of medial parietal regions in linking present and previous multisensory evidence to guide adaptive behavior.


Person in charge : BoGyu Jang

Contact: jangbk87@dgist.ac.kr, 053)785-6101


 

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