Eye Blink Responses to the Four Basic Taste Stimuli in Healthy Young HumansReport as inadecuate




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Taste stimuli can elicit facial responses, and the facial responses may be useful indexes of taste sensations. In this study, we propose that eye blinking is also elicited by taste stimuli and we examined eye blink responses in six healthy young adults. Low and high concentration solutions of the four basic taste qualities sweetness, saltiness, sourness, and bitterness and distilled water were delivered via a silicone tube. Facial responses were recorded by a video camera and eye blink responses were identified. The number of eye blinks in the 5 s following stimulation, and the latency and duration of the first eye blink, were quantified. High concentrations of sour and bitter solutions increased the number of eye blinks 195% and 227%, respectively; P < 0.01, and shortened the latency 68% and 62%; P < 0.05 and prolonged the duration 188% and 184%; P < 0.05 of the first eye blink compared to distilled water. Eye blink responses may be due to a gustofacial reflex and-or a myotatic reflex within the facial muscles. These results suggest that the eye blink response can be used as an index of gustofacial response.

KEYWORDS

Eye Blink; Gustofacial Response; Taste; Adult Humans

Cite this paper

I. Ashida, Y. Tamaki and Y. Miyaoka -Eye Blink Responses to the Four Basic Taste Stimuli in Healthy Young Humans,- Journal of Behavioral and Brain Science, Vol. 3 No. 4, 2013, pp. 379-384. doi: 10.4236-jbbs.2013.34038.





Author: Ichiro Ashida, Yuko Tamaki, Yozo Miyaoka

Source: http://www.scirp.org/



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