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Intermodulation from Unisensory to Multisensory Perception: A Review
Shen Xu1, Xiaolin Zhou1,2,3, Lihan Chen1,4
1Beijing Key Laboratory of Behavior and Mental Health, School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China.
Brain Sciences
|December 23, 2022
Summary
Intermodulation (IM) studies use frequency modulations to measure neural interactions. This review explores IM in visual perception and proposes its use in understanding multisensory processing and brain dynamics.
Area of Science:
- Neuroscience
- Sensory Perception
- Cognitive Science
Background:
- Intermodulation (IM) studies analyze brain activity using multiple temporal modulations.
- Electroencephalograms (EEG) are commonly used to obtain IM data, analyzed in the frequency domain.
- IM offers a direct physiological measure of neural interaction.
Purpose of the Study:
- To review recent applications of IM in visual perception.
- To detail IM protocols and types.
- To extend IM applications to the multisensory domain.
Main Methods:
- Review of existing literature on intermodulation studies in neuroscience.
- Analysis of IM protocols and data from electroencephalograms (EEG).
- Exploration of IM's potential in multisensory integration research.
Main Results:
- IM is a valuable tool for deciphering neural interactions in visual perception.
- IM can reveal different levels of perceptual processing.
- The review highlights IM's potential for understanding hierarchical multisensory processing.
Conclusions:
- Intermodulation (IM) provides objective physiological measures of neural interaction.
- IM can elucidate hierarchical processing in multisensory information.
- Further application of IM can deepen our understanding of brain dynamics in perception.
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