A template-projection approach to decode higherorder vision in realtime and at the perceptual threshold

Kai J. Miller, Dora Hermes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The link between object perception and neural activity in visual cortical areas is a problem of fundamental importance in neuroscience. We measured brain surface physiology with implanted electrocorticography (ECoG) electrodes in humans. Physiological responses to visual stimuli in object-specific ventral temporal loci are highly polymorphie in different cortical loci, for both broadband and raw potential trace changes. To address this, we developed a template-projection method, where averaged responses from a localizer task are projected into the continuous datastream recorded from the brain. These projections are used to build a feature space. A c1assifier for decoding visual perception is applied to this feature space du ring training periods, and is applied to plain images, as weil as noise masked images. This enables robust c1assification of visual perceptual state.

Original languageEnglish (US)
Title of host publication5th International Winter Conference on Brain-Computer Interface, BCI 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages30-35
Number of pages6
ISBN (Electronic)9781509050963
DOIs
StatePublished - Feb 16 2017
Event5th International Winter Conference on Brain-Computer Interface, BCI 2017 - Gangwon Province, Korea, Republic of
Duration: Jan 9 2017Jan 11 2017

Publication series

Name5th International Winter Conference on Brain-Computer Interface, BCI 2017

Conference

Conference5th International Winter Conference on Brain-Computer Interface, BCI 2017
CountryKorea, Republic of
CityGangwon Province
Period1/9/171/11/17

Keywords

  • Classijication
  • Electrocorticography
  • Perception

ASJC Scopus subject areas

  • Signal Processing
  • Human-Computer Interaction

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