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New findings in smell and taste

Some new findings to be presented at the meeting (click title for additional information):

  • Risky Brain Response: Brain Response in People at Risk for Alzheimer's Disease - Alzheimer's disease (AD) causes devastating effects on memory as the victim slowly deteriorates. We have studied people at risk for AD to identify early changes that may signal the beginning of AD. When trying to remember, people at risk showed different patterns of brain response than those without genetic risk.

  • The Brain Automatically Adjusts to Boost Noses Smelling Capability When Needed Data from various sensory systems in numerous species suggest fast oscillations in neural assemblies are a mechanism to facilitate stimulus representation. We show that gamma oscillatory power in the rat olfactory bulb is modulated by the rats online according to task demands. This enhancement reflects a strategy shift in the dynamics of the system.

  • If You Mix a Pleasant and Unpleasant Odor, What Do You Get? - When you mix 25% pleasant odor with 75% unpleasant odor, it becomes much less unpleasant than 100% unpleasant odor. This change, however, may be due more to the 25% reduction in unpleasant odor than to the addition of 25% pleasant odor. In this study we aim to elucidate the rules underlying this interaction such that we will be able to predict the pleasantness of odor mixtures based on the pleasantness of their components.

  • Smelly Environments Make Better Noses - Exposure to an odor for one hour per day for less than two weeks changes the brain and make rats better smellers. The improvement comes from increasing the number of responsive small inhib
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Contact: Charles J. Wysocki
wysocki@monell.org
856-571-1004
Association for Chemoreception Sciences
18-Apr-2007


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