Neuroelectric Correlates of Perceptual Awareness During the Auditory Attentional Blink DOI Creative Commons
Claude Alain, Mary Lou O’Neil, Lori J. Bernstein

et al.

Brain Sciences, Journal Year: 2025, Volume and Issue: 15(6), P. 537 - 537

Published: May 22, 2025

Background: Perceptual awareness refers to the conscious detection and identification of a sensory event. In electrophysiological studies, it is associated with modality-specific negative-going event-related potential, which can be observed as early 100–300 ms after stimulus onset. Method: this study, we measured neuroelectric brain activity during auditory attentional blink, comparing responses when participants correctly reported both first (T1) second (T2) targets versus only T1 was detected, but T2 missed. To achieve robust statistical power, pooled data across six previously published studies for current analyses. Result: Our results revealed that accurately reporting elicited greater negativity between 150 300 over frontocentral central scalp areas following onset, compared trials where detected not. Additionally, positive displacement, peaking around 800 central-parietal area, followed negativity. Successful also more pronounced alpha suppression, at approximately 500 before Conclusions: These findings suggest neural correlates what refer “auditory awareness” occur sequence soon Pre-stimulus difference in power may serve an indicator lapses attention, reflecting periods are less engaged or off-task.

Language: Английский

Single-neuron activity reflects visual awareness in human lateral occipital complex DOI Creative Commons
Michaël Vanhoyland, Peter Janssen, Tom Theys

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Abstract Conscious perception, a critical aspect of human cognition, is assumed to emerge from complex network interacting brain regions that transmit information via feedforward and recurrent pathways. This study presents the first single- multiunit recordings lateral occipital (LO), key region for shape object recognition, during three distinct perceptual paradigms: backward masking, flash suppression binocular rivalry. In all paradigms, conscious perception was required reliable stimulus decoding neuronal population responses. These findings highlight intricate neural mechanisms underlying visual awareness show LO responses predominantly align with offering new insights into correlates consciousness.

Language: Английский

Citations

0
Conscious tactile perception entails distinct neural dynamics within somatosensory areas DOI Creative Commons
Davide Albertini, Maria Del Vecchio, Ivana Sartori

et al.

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

Citations

0
Neural correlates of consciousness in an auditory no-report fMRI study DOI Creative Commons
Torge Dellert,

Henning Balster,

Insa Schloßmacher

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2025, Volume and Issue: unknown

Published: May 21, 2025

Abstract In the search for neural correlates of consciousness (NCC), prominent theories disagree about role sensory versus wide-spread fronto-parietal brain activity. Research on auditory awareness has been widely neglected, and isolating NCC from task-related post-perceptual processes (e.g., report) is an ongoing challenge. The present study addressed these issues using functional magnetic resonance imaging (fMRI) during a no-report inattentional deafness paradigm. Sixty-three participants performed distractor task while supra-threshold but task-irrelevant sounds were presented in background. Whereas one group was aware stimuli, another remained unaware. Comparing responses to critical between unaware controlling postperceptual processing revealed that associated with significantly increased activity secondary not areas. These findings suggest dominant stimulus-specific rather than widespread information broadcasting conscious perception.

Language: Английский

Citations

0
Neuroelectric Correlates of Perceptual Awareness During the Auditory Attentional Blink DOI Creative Commons
Claude Alain, Mary Lou O’Neil, Lori J. Bernstein

et al.

Brain Sciences, Journal Year: 2025, Volume and Issue: 15(6), P. 537 - 537

Published: May 22, 2025

Background: Perceptual awareness refers to the conscious detection and identification of a sensory event. In electrophysiological studies, it is associated with modality-specific negative-going event-related potential, which can be observed as early 100–300 ms after stimulus onset. Method: this study, we measured neuroelectric brain activity during auditory attentional blink, comparing responses when participants correctly reported both first (T1) second (T2) targets versus only T1 was detected, but T2 missed. To achieve robust statistical power, pooled data across six previously published studies for current analyses. Result: Our results revealed that accurately reporting elicited greater negativity between 150 300 over frontocentral central scalp areas following onset, compared trials where detected not. Additionally, positive displacement, peaking around 800 central-parietal area, followed negativity. Successful also more pronounced alpha suppression, at approximately 500 before Conclusions: These findings suggest neural correlates what refer “auditory awareness” occur sequence soon Pre-stimulus difference in power may serve an indicator lapses attention, reflecting periods are less engaged or off-task.

Language: Английский

Citations

0