This becomes a problem when one is determining contaminations with a pathogen or chemical for reasons of disposal. While there may be no sensation of odor -- it seems exposed objects have the potential to elicit a response through an accessory pathway. Interestingly, another study shows that PTSD can modify a response to unpleasant odors which is not influenced by past experiences of abuse. From this, it would seem normal that chemical exposures would have the potential to elicit an "unforeseen" behavioral response considering that both odor and emotional trauma can be associated with a chemical event. The olfactory bulb is a regulator of circadian rhythm which enhances olfactory responsivity at night and coordinates other daily behaviors. It should be safe to assume that aberrant olfactory signals may alter normal presentation of behaviors such as these. Some evidence of this is demonstrated in animal ecology studies of animals in the lab and in nature where researchers have observed alterations in behavior from environmental influences including how circadian cycles dictate prey and seasonal behavior.
Accessory and main olfactory systems influences on predator odor-induced behavioral and endocrine stress responses in rats.: "Masini, C. V., Garcia, R. J., Sasse, S. K., Nyhuis, T. J., Day, H. E., and Campeau, S. (2010). Accessory and main olfactory systems influences on predator odor-induced behavioral and endocrine stress responses in rats. Behavioural brain research, 207(1):70-77." http://www.citeulike.org/user/HEIRS/article/5885105
Croy, I., Schellong, J., Joraschky, P., and Hummel, T. (2010). Ptsd, but not childhood maltreatment, modifies responses to unpleasant odors. International journal of psychophysiology. http://www.citeulike.org/user/HEIRS/article/6633762
Granados-Fuentes, D., Tseng, A., and Herzog, E. D. (2006). A circadian clock in the olfactory bulb controls olfactory responsivity. J. Neurosci., 26(47):12219-12225. http://www.citeulike.org/user/HEIRS/article/6634018
No comments:
Post a Comment