Olfaction and Alzheimers: How and why are they connected?
Summary :
Table of Contents
- Introduction
- The poor sense of smell in humans
- The olfactory bulb
- preliminary research into olfaction disorders
- Hypothesis for the relationship with hyposmia
- Olfaction disorder: Not limited to people with Alzheimer's Disease
- References
Abstract
For many years olfaction has been the most disregarded and least studied sense in the scientific and medical communities. Consequently, the amount of knowledge about how olfaction works is small compared to the vast knowledge we have about the other four human senses2. olfaction is the chemical sense that is often taken for granted. In actuality olfaction's importance matches that of other senses in providing vital environmental information, senses of pleasure and protection7. olfaction helps in object identification and it serves as an early warning device in dangerous situations. Since the olfactory system and the gustatory system are both chemical senses, that are closely connected and therefore problems with the olfactory tract can affect hunger and eating patterns. Anosmia (lack of the ability to smell) limits satiation by removing some of the pleasure derived from eating 5. The fact that olfaction has been thought of as a "primitive" sense and the idea that olfaction problems are not considered as tragic as problems of the other senses has also contributed to its lack of study. For many years, researchers in olfaction also lacked the quantitative tests needed to study olfaction properly.
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