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Electrophysiological correlates of consciousness in mental imagery
University of Skövde, School of Bioscience.
2025 (English)Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The present study examines the electrophysiological correlates of auditory mental imagery and conscious perception through EEG, focusing on two core event-related potential (ERP) components: Auditory Awareness Negativity (AAN) and Late Positivity (LP). Participants engaged in tasks involving the imagination of noise and pure tones. The data revealed a consistent early negative signal within the 200–300 ms post-stimulus window, indicative of the AAN component, which is typically associated with conscious auditory awareness. In contrast, the LP component, related to higher-order cognitive access, was notably diminished or absent. These findings suggest that auditory mental imagery engages perception-like neural mechanisms and that phenomenal awareness may arise independently of global broadcasting networks, albeit with greater ERP latency and lower amplitude . The results align with Recurrent Processing Theory and support a layered model of consciousness, wherein phenomenal experience can emerge from localized recurrent activity. Although statistical significance was limited by sample size, the consistent ERP patterns point to the presence of consciousness-related processing during internally generated auditory experiences, with potential implications for brain-computer interfaces and clinical applications.

Place, publisher, year, edition, pages
2025. , p. 27
Keywords [en]
Auditory mental imagery, perceptual awareness, NCC, event-related potentials, latency, amplitude
National Category
Neurosciences
Identifiers
URN: urn:nbn:se:his:diva-25649OAI: oai:DiVA.org:his-25649DiVA, id: diva2:1985978
External cooperation
University of Turku
Subject / course
Cognitive Neuroscience
Educational program
Kognitiv neurovetenskap: Medvetandet och hjärnan - magisterprogram
Supervisors
Examiners
Available from: 2025-07-29 Created: 2025-07-29 Last updated: 2025-09-29Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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