Visual awareness negativity is an early neural correlate of awareness: A preregistered study with two Gabor sizes.
Electrophysiological recordings are commonly used to study the neural correlates of consciousness in humans. Previous research is inconsistent as to whether awareness can be indexed with visual awareness negativity (VAN) at about 200 ms or if it occurs later. The present study was preregistered with...
| Publicado en: | Cognitive, Affective & Behavioral Neuroscience Vol. 18; no. 1; pp. 176 - 189 |
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| Autores principales: | , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Feb2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=128149584&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 128149584 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15307026 NA4 jtl: Cognitive, Affective & Behavioral Neuroscience issn: 15307026 maglogo: N pubinfo: dt: Feb2018 vid: 18 iid: 1 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 128149584 10.3758/s13415-018-0562-z 128149584 ppf: 176 ppct: 13 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Visual awareness negativity is an early neural correlate of awareness: A preregistered study with two Gabor sizes. aug: au: Eklund, Rasmus Wiens, Stefan affil: , Psykologiska Institutionen, Stockholm University, Stockholm, Sweden sug: ab: Electrophysiological recordings are commonly used to study the neural correlates of consciousness in humans. Previous research is inconsistent as to whether awareness can be indexed with visual awareness negativity (VAN) at about 200 ms or if it occurs later. The present study was preregistered with two main aims: First, to provide independent evidence for or against the presence of VAN, and second, to study whether stimulus size may account for the inconsistent findings. Subjects were shown low-contrast Gaussian filtered gratings (Gabor patches) in the four visual quadrants. Gabor size (large and small) was varied in different sessions and calibrated to each subject’s threshold of visual awareness. Event-related potentials were derived from trials in which subjects localized the Gabors correctly to capture the difference between trials in which they reported awareness versus no awareness. Bayesian analyses revealed very strong evidence for the presence of VAN for both Gabor sizes. However, there was no evidence for or against an effect of stimulus size. The present findings provide evidence for VAN as an early neural correlate of awareness. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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