Visual awareness, emotion, and gamma band synchronization

Qian Luo, Derek Mitchell, Xi Cheng, Krystal Mondillo, Daniel McCaffrey, Tom Holroyd, Frederick Carver, Richard Coppola, James Blair

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

What makes us become aware? A popular hypothesis is that if cortical neurons fire in synchrony at a certain frequency band (gamma), we become aware of what they are representing. We tested this hypothesis adopting brain-imaging techniques with good spatiotemporal resolution and frequency-specific information. Specifically, we examined the degree to which increases in event-related synchronization (ERS) in the gamma band were associated with awareness of a stimulus (its detectability) and/or the emotional content of the stimulus. We observed increases in gamma band ERS within prefrontal-anterior cingulate, visual, parietal, posterior cingulate, and superior temporal cortices to stimuli available to conscious awareness. However, we also observed increases in gamma band ERS within the amygdala, visual, prefrontal, parietal, and posterior cingulate cortices to emotional relative to neutral stimuli, irrespective of their availability to conscious access. This suggests that increased gamma band ERS is related to, but not sufficient for, consciousness.

Original languageEnglish (US)
Pages (from-to)1896-1904
Number of pages9
JournalCerebral Cortex
Volume19
Issue number8
DOIs
StatePublished - Aug 1 2009

Fingerprint

Gyrus Cinguli
Emotions
Temporal Lobe
Amygdala
Consciousness
Neuroimaging
Neurons

Keywords

  • Consciousness
  • Emotion
  • Gamma
  • MEG
  • Synchronization
  • Visual awareness

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Cellular and Molecular Neuroscience

Cite this

Luo, Q., Mitchell, D., Cheng, X., Mondillo, K., McCaffrey, D., Holroyd, T., ... Blair, J. (2009). Visual awareness, emotion, and gamma band synchronization. Cerebral Cortex, 19(8), 1896-1904. https://doi.org/10.1093/cercor/bhn216

Visual awareness, emotion, and gamma band synchronization. / Luo, Qian; Mitchell, Derek; Cheng, Xi; Mondillo, Krystal; McCaffrey, Daniel; Holroyd, Tom; Carver, Frederick; Coppola, Richard; Blair, James.

In: Cerebral Cortex, Vol. 19, No. 8, 01.08.2009, p. 1896-1904.

Research output: Contribution to journalArticle

Luo, Q, Mitchell, D, Cheng, X, Mondillo, K, McCaffrey, D, Holroyd, T, Carver, F, Coppola, R & Blair, J 2009, 'Visual awareness, emotion, and gamma band synchronization', Cerebral Cortex, vol. 19, no. 8, pp. 1896-1904. https://doi.org/10.1093/cercor/bhn216
Luo Q, Mitchell D, Cheng X, Mondillo K, McCaffrey D, Holroyd T et al. Visual awareness, emotion, and gamma band synchronization. Cerebral Cortex. 2009 Aug 1;19(8):1896-1904. https://doi.org/10.1093/cercor/bhn216
Luo, Qian ; Mitchell, Derek ; Cheng, Xi ; Mondillo, Krystal ; McCaffrey, Daniel ; Holroyd, Tom ; Carver, Frederick ; Coppola, Richard ; Blair, James. / Visual awareness, emotion, and gamma band synchronization. In: Cerebral Cortex. 2009 ; Vol. 19, No. 8. pp. 1896-1904.
@article{a58418f691674787a39a74310e79bc45,
title = "Visual awareness, emotion, and gamma band synchronization",
abstract = "What makes us become aware? A popular hypothesis is that if cortical neurons fire in synchrony at a certain frequency band (gamma), we become aware of what they are representing. We tested this hypothesis adopting brain-imaging techniques with good spatiotemporal resolution and frequency-specific information. Specifically, we examined the degree to which increases in event-related synchronization (ERS) in the gamma band were associated with awareness of a stimulus (its detectability) and/or the emotional content of the stimulus. We observed increases in gamma band ERS within prefrontal-anterior cingulate, visual, parietal, posterior cingulate, and superior temporal cortices to stimuli available to conscious awareness. However, we also observed increases in gamma band ERS within the amygdala, visual, prefrontal, parietal, and posterior cingulate cortices to emotional relative to neutral stimuli, irrespective of their availability to conscious access. This suggests that increased gamma band ERS is related to, but not sufficient for, consciousness.",
keywords = "Consciousness, Emotion, Gamma, MEG, Synchronization, Visual awareness",
author = "Qian Luo and Derek Mitchell and Xi Cheng and Krystal Mondillo and Daniel McCaffrey and Tom Holroyd and Frederick Carver and Richard Coppola and James Blair",
year = "2009",
month = "8",
day = "1",
doi = "10.1093/cercor/bhn216",
language = "English (US)",
volume = "19",
pages = "1896--1904",
journal = "Cerebral cortex (New York, N.Y. : 1991)",
issn = "1047-3211",
publisher = "Oxford University Press",
number = "8",

}

TY - JOUR

T1 - Visual awareness, emotion, and gamma band synchronization

AU - Luo, Qian

AU - Mitchell, Derek

AU - Cheng, Xi

AU - Mondillo, Krystal

AU - McCaffrey, Daniel

AU - Holroyd, Tom

AU - Carver, Frederick

AU - Coppola, Richard

AU - Blair, James

PY - 2009/8/1

Y1 - 2009/8/1

N2 - What makes us become aware? A popular hypothesis is that if cortical neurons fire in synchrony at a certain frequency band (gamma), we become aware of what they are representing. We tested this hypothesis adopting brain-imaging techniques with good spatiotemporal resolution and frequency-specific information. Specifically, we examined the degree to which increases in event-related synchronization (ERS) in the gamma band were associated with awareness of a stimulus (its detectability) and/or the emotional content of the stimulus. We observed increases in gamma band ERS within prefrontal-anterior cingulate, visual, parietal, posterior cingulate, and superior temporal cortices to stimuli available to conscious awareness. However, we also observed increases in gamma band ERS within the amygdala, visual, prefrontal, parietal, and posterior cingulate cortices to emotional relative to neutral stimuli, irrespective of their availability to conscious access. This suggests that increased gamma band ERS is related to, but not sufficient for, consciousness.

AB - What makes us become aware? A popular hypothesis is that if cortical neurons fire in synchrony at a certain frequency band (gamma), we become aware of what they are representing. We tested this hypothesis adopting brain-imaging techniques with good spatiotemporal resolution and frequency-specific information. Specifically, we examined the degree to which increases in event-related synchronization (ERS) in the gamma band were associated with awareness of a stimulus (its detectability) and/or the emotional content of the stimulus. We observed increases in gamma band ERS within prefrontal-anterior cingulate, visual, parietal, posterior cingulate, and superior temporal cortices to stimuli available to conscious awareness. However, we also observed increases in gamma band ERS within the amygdala, visual, prefrontal, parietal, and posterior cingulate cortices to emotional relative to neutral stimuli, irrespective of their availability to conscious access. This suggests that increased gamma band ERS is related to, but not sufficient for, consciousness.

KW - Consciousness

KW - Emotion

KW - Gamma

KW - MEG

KW - Synchronization

KW - Visual awareness

UR - http://www.scopus.com/inward/record.url?scp=67651121916&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67651121916&partnerID=8YFLogxK

U2 - 10.1093/cercor/bhn216

DO - 10.1093/cercor/bhn216

M3 - Article

C2 - 19047574

AN - SCOPUS:67651121916

VL - 19

SP - 1896

EP - 1904

JO - Cerebral cortex (New York, N.Y. : 1991)

JF - Cerebral cortex (New York, N.Y. : 1991)

SN - 1047-3211

IS - 8

ER -