Vestibular stimulation

G K GRAY gord at homostudy.win-uk.net
Thu Nov 14 16:59:10 EST 1996


 
In article <Pine.LNX.3.91.961113231643.25493F-100000 at Hera>, Stephen Black (sblack at UBISHOPS.CA) writes:
>I'm discussing the vestibular system with my undergraduate class in 
>physiological psychology. I wonder if anyone would care to confirm or 
>correct the following:
>
>I've told them about the Barany (rotating) chair method of stimulating the 
>semi-circular canals. The typical finding is that a blindfolded subject 
>will perceive rotation correctly while being accelerated up to speed, 
>will no longer perceive rotation some time after being rotated at a 
>constant speed, and then will experience a sensation of rotation in the 
>opposite direction (falsely) on braking to a stop.
>
>However, much research seems to go on these days not in a Barany chair 
>but in a human centrifuge, and there are many natural situations, such as 
>travelling on a curve in a car, in a jet, etc. It seems to me that this 
>type of rotation at the end of a radius is different from the Barany 
>chair type which is around your own axis. I expect that constant rotation 
>in a centrifuge, unlike in a chair, would continue to produce a 
>vestibular sensation of rotation.
>
>Correct? I haven't seen anyone discuss the distinction between the two 
>types of rotation but it seems to me they must be different. Perhaps it's 
>considered too obvious to mention.
>
>
>-Stephen
>
>------------------------------------------------------------------------
>Stephen Black, Ph.D.                      tel: (819) 822-9600 ext 2470
>Department of Psychology                  fax: (819) 822-9661
>Bishop's University                    e-mail: sblack at ubishops.ca
>Lennoxville, Quebec               
>J1M 1A9
>Canada
>------------------------------------------------------------------------
>
There are plenty of wheel rides in amusement parks where suitable
experiments could be run.

Gord 




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