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Chihiro Hiramatsu

3 papers in the library · 10 citations · publishing 2025-2026

Papers

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Robust individual alignment of color qualia structures: toward a structure-based taxonomy of divergent color experiences

bioRxiv February 15, 2026 Yu Togashi, Yuko Yotsumoto, Chihiro Hiramatsu et al. preprint

Whether qualitative aspects of consciousness, or qualia in short, are equivalent across individuals is a foundational scientific question. Testing this is challenging because one cannot assume a shared mapping between stimuli and private experience (my “red” may be your “green”) [1–3]. Previously, we proposed a structural characterization of qualia [4, 5] and the quantitative assessment of...

A dream EEG and mentation database.

Nature Communications August 13, 2025 William Wong, Rubén Herzog, Kátia Cristine Andrade et al. 10 citations

Magneto/electroencephalography (M/EEG) studies of dreaming are an essential paradigm in the investigation of neurocognitive processes of human consciousness during sleep, but they are limited by the number of observations that can be collected per study. Dream research also involves substantial methodological and conceptual variability, which poses problems for the integration of results. To...

The Neural Basis of Consciousness During Evening Naps Measured by MEG: A Registered Report

Chikayo Hemmi, Angus Leung, Jennifer Windt et al. preprint

Dream experiences during sleep provide an excellent opportunity to investigate the neural basis of consciousness. Previous studies have examined the neural correlates of dreaming using electroencephalography (EEG), focusing on spectral power in specific frequency bands. However, findings have been inconsistent, particularly regarding the spatiotemporal characteristics of these correlates,...