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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
Published on: October 24, 2012
Time representations can be made from nontemporal information in the brain: an MEG study
Yasuki Noguchi1, Ryusuke Kakigi
1Department of Integrative Physiology, National Institute for Physiological Sciences, Myodaiji, Okazaki, Japan. noguchi@nips.ac.jp
Cerebral Cortex (New York, N.Y. : 1991)
|January 20, 2006
Summary
Our brain
Area of Science:
- Neuroscience
- Cognitive Science
- Psychophysics
Background:
- Time perception is crucial for humans and animals.
- Understanding the brain's internal clock is key to understanding time perception.
Purpose of the Study:
- Investigate how the brain's internal clock converts sensory experiences into time representations.
- Examine neural activities in visual areas during time estimation.
Main Methods:
- Used magnetoencephalography (MEG) to record neural activity.
- Focused on high-level visual areas in human subjects.
- Measured subjective time perception psychophysically.
Main Results:
- Neural indices of stimulus duration can dissociate from subjective perception.
- Neural activity strength, not timing, correlates with subjective time.
- Perceptual neural activity's nontemporal information influences time representation.
Conclusions:
- Subjective time perception is shaped by the strength, not just the timing, of neural activity.
- Nontemporal aspects of neural signals play a significant role in constructing our sense of time.
