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Auditory stimuli activate parietal brain regions: a whole-head MEG study
J Lavikainen1, M Huotilainen, E Pekkonen
1Department of Psychology, University of Helsinki, Finland.
Neuroreport
|December 30, 1994
Summary
Magnetoencephalography (MEG) studies show auditory stimuli activate the human brain's supratemporal cortex. This research reveals novel evidence of parietal cortex activation by auditory stimuli using advanced whole-head magnetometers.
Area of Science:
- Neuroscience
- Auditory Neuroscience
- Human Brain Imaging
Background:
- Previous magnetoencephalography (MEG) studies identified auditory stimulus processing in the human supratemporal cortex.
- The extent of brain activation beyond the primary auditory cortex remained largely unexplored.
Purpose of the Study:
- To investigate whether auditory stimulation activates brain regions outside the known auditory cortex.
- To utilize a novel whole-head magnetometer for enhanced brain activity detection.
Main Methods:
- Employing a novel whole-head magnetometer (Neuromag-122) for magnetoencephalographic (MEG) recordings.
- Presenting discrete auditory stimuli to human participants.
Main Results:
- Evidence of neuronal activation in the parietal cortex in response to auditory stimuli was observed.
- This finding extends beyond the previously identified supratemporal cortex activation.
Conclusions:
- Auditory stimuli can elicit responses in the human parietal cortex, not just the auditory cortex.
- This suggests a broader neural network involved in auditory processing than previously understood.