The threshold for conscious report: Signal loss and response bias in visual and frontal cortex

Bram van Vugt; Bruno Dagnino; Devavrat Vartak; Houman Safaai; Stefano Panzeri; Stanislas Dehaene; Pieter R Roelfsema

doi:10.1126/science.aar7186

The threshold for conscious report: Signal loss and response bias in visual and frontal cortex

Bram van Vugt, Bruno Dagnino, Devavrat Vartak, Houman Safaai, Stefano Panzeri, Stanislas Dehaene, Pieter R Roelfsema

NIN

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgave › Artikel › Wetenschappelijk › peer review

Samenvatting

Why are some visual stimuli consciously detected, while others remain subliminal? We investigated the fate of weak visual stimuli in the visual and frontal cortex of awake monkeys trained to report stimulus presence. Reported stimuli were associated with strong sustained activity in frontal cortex and frontal activity was weaker and quickly decayed for unreported stimuli. Information about weak stimuli could be lost at successive stages en route from visual to frontal cortex and these propagation failures were confirmed by microstimulation of area V1. Fluctuations in response bias and sensitivity during perception of identical stimuli were traced back to pre-stimulus brain-state markers. A model in which stimuli become consciously reportable when they elicit a non-linear ignition process in higher cortical areas explained our results.

Originele taal-2	Engels
Pagina's (van-tot)	537-542
Tijdschrift	Science
Volume	360
DOI's	https://doi.org/10.1126/science.aar7186
Status	Gepubliceerd - 2018

Toegang tot document

10.1126/science.aar7186

Failed ignition - why some visual cues don’t reach consciousness
P.R. Roelfsema
26/03/2018 → 20/05/2019
3 items van Media-aandacht
Pers / media: Expertcommentaar

Citeer dit

@article{3af6ecd368844c7f98ec308718dfa5e9,

title = "The threshold for conscious report: Signal loss and response bias in visual and frontal cortex",

abstract = "Why are some visual stimuli consciously detected, while others remain subliminal? We investigated the fate of weak visual stimuli in the visual and frontal cortex of awake monkeys trained to report stimulus presence. Reported stimuli were associated with strong sustained activity in frontal cortex and frontal activity was weaker and quickly decayed for unreported stimuli. Information about weak stimuli could be lost at successive stages en route from visual to frontal cortex and these propagation failures were confirmed by microstimulation of area V1. Fluctuations in response bias and sensitivity during perception of identical stimuli were traced back to pre-stimulus brain-state markers. A model in which stimuli become consciously reportable when they elicit a non-linear ignition process in higher cortical areas explained our results.",

keywords = "Journal Article",

author = "{van Vugt}, Bram and Bruno Dagnino and Devavrat Vartak and Houman Safaai and Stefano Panzeri and Stanislas Dehaene and Roelfsema, {Pieter R}",

note = "Copyright {\textcopyright} 2018, American Association for the Advancement of Science.",

year = "2018",

doi = "10.1126/science.aar7186",

language = "English",

volume = "360",

pages = "537--542",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science (AAAS)",

}

TY - JOUR

T1 - The threshold for conscious report

T2 - Signal loss and response bias in visual and frontal cortex

AU - van Vugt, Bram

AU - Dagnino, Bruno

AU - Vartak, Devavrat

AU - Safaai, Houman

AU - Panzeri, Stefano

AU - Dehaene, Stanislas

AU - Roelfsema, Pieter R

PY - 2018

Y1 - 2018

N2 - Why are some visual stimuli consciously detected, while others remain subliminal? We investigated the fate of weak visual stimuli in the visual and frontal cortex of awake monkeys trained to report stimulus presence. Reported stimuli were associated with strong sustained activity in frontal cortex and frontal activity was weaker and quickly decayed for unreported stimuli. Information about weak stimuli could be lost at successive stages en route from visual to frontal cortex and these propagation failures were confirmed by microstimulation of area V1. Fluctuations in response bias and sensitivity during perception of identical stimuli were traced back to pre-stimulus brain-state markers. A model in which stimuli become consciously reportable when they elicit a non-linear ignition process in higher cortical areas explained our results.

AB - Why are some visual stimuli consciously detected, while others remain subliminal? We investigated the fate of weak visual stimuli in the visual and frontal cortex of awake monkeys trained to report stimulus presence. Reported stimuli were associated with strong sustained activity in frontal cortex and frontal activity was weaker and quickly decayed for unreported stimuli. Information about weak stimuli could be lost at successive stages en route from visual to frontal cortex and these propagation failures were confirmed by microstimulation of area V1. Fluctuations in response bias and sensitivity during perception of identical stimuli were traced back to pre-stimulus brain-state markers. A model in which stimuli become consciously reportable when they elicit a non-linear ignition process in higher cortical areas explained our results.

KW - Journal Article

U2 - 10.1126/science.aar7186

DO - 10.1126/science.aar7186

M3 - Article

C2 - 29567809

SN - 0036-8075

VL - 360

SP - 537

EP - 542

JO - Science

JF - Science

ER -

The threshold for conscious report: Signal loss and response bias in visual and frontal cortex

Samenvatting

Toegang tot document

Vingerafdruk

Pers/Media

Failed ignition - why some visual cues don’t reach consciousness

Citeer dit