Sound-induced illusory flash perception: role of gamma band responses

Joydeep Bhattacharya · Ladan B. Shams · Shinsuke Shimojo A

103 citations0/0 files storedNeuroreport

No readable copy stored yet — this record is metadata only.

No open-access location is known for this record yet.

Literature note Cite in a project Citation map

Multisensory perception and integration Visual perception and processing mechanisms Neural dynamics and brain function

Abstract

In the recently discovered sound-induced illusory flash phenomenon, a single flash accompanied with two auditory beeps is perceived as two flashes in a majority of trials. Here we asked what the neural substrates distinguishing illusion and no-illusion (i.e. perception of single flash) percepts are under identical stimulus configuration. Wavelet based method was used to analyze gamma band (> 30 Hz) responses in the event-related potential (ERP) signals recorded over visual cortical regions. We found: (i) significantly higher oscillatory and induced gamma band responses in illusion than in no-illusion trials, and (ii) significant supra-additive audio-visual interactions only in illusion trials. These results provide a clear neurophysiological correlate to the perception of illusion. Furthermore, the results suggest that auditory stimuli modulate cortical processing of visual stimuli, and the flash illusion (qualitative alteration of visual percept) only takes place when this modulation exceeds some critical threshold for the registration of conscious awareness.

Paper brief

Loading…

Cite this work

Citation unavailable for this work.

BibTeX RIS CSL-JSON

No public copy is stored for this record, so only the metadata is cited.

Citations in this library

Citation map →

Stored only when both papers are in the corpus — 103 citations exist upstream.

References

1976Hearing lips and seeing voices 2000What you see is what you hear 1999Auditory-Visual Integration during Multimodal Object Recognition in Humans: A Behavioral and Electrophysiological Study 2001Crossmodal Processing in the Human Brain: Insights from Functional Neuroimaging Studies 2002Anatomical Evidence of Multimodal Integration in Primate Striate Cortex 2000Modulation of Human Visual Cortex by Crossmodal Spatial Attention 2001Sensory modalities are not separate modalities: plasticity and interactions 2000Multisensory perception: Beyond modularity and convergence

Cited by

2015GABA concentration in superior temporal sulcus predicts gamma power and perception in the sound-induced flash illusion 2020What you see is what you hear: Twenty years of research using the Sound-Induced Flash Illusion 2011Grapheme-color synesthetes show enhanced crossmodal processing between auditory and visual modalities 2010Neuromodulation of multisensory perception: A tDCS study of the sound-induced flash illusion 2004When audition alters vision: an event-related potential study of the cross-modal interactions between faces and voices

Explore the map →

Papers that cite the same references — the relational fallback while embeddings are still backfilling.

Imported from OpenAlex (CC0) — nothing here is generated.