Olfactory sensory lateralization in the human brain
Michael J. Tobia1, Abdou Thiam1, Prasanna Karunanayaka2, and Qing X. Yang1
1Radiology, Penn State Hershey, Hershey, PA, United States, 2Radiology, Penn State Hershey, Heshey, PA, United States
The olfactory system is unique from other sensory systems in that it is primarily ipsilateral from the periphery to the central nervous system. Using fMRI and a simple olfactory stimulus detection paradigm, we show a right hemispheric bias for sensory activation stemming from unilateral stimulation to either nostril. This suggests the presence of a contralateral functional organization of the olfactory system.
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