Abstract:
:A 3-day incremental protocol was conducted with the aim of adapting human subjects to make head movements comfortably during 30 RPM centrifugation. With motion sickness as a potentially limiting factor, the protocol was designed using a quantitative motion sickness model based upon the neural mismatch sensory conflict theory. Centrifuge velocity was incremented from 14 RPM on day 1, to 23 RPM on day 2, to 30 RPM on day 3, with subjects making a total of 42 head movements on each day. Twenty-four subjects completed the experiment with average motion sickness levels below five (out of 20). Four subjects aborted due to motion sickness. Adaptation of non-compensatory vertical nystagmus was observed through an 18% decrease in the vertical aVOR time constant over the 3 days. Subjective intensity ratings for the head movements decreased by approximately 40% over the 3 days, while illusory motion duration decreased by 18%. Feasibility of head movements during 30 RPM rotation was demonstrated with only 3 days of incremental training.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Elias PZ,Jarchow T,Young LRdoi
10.1007/s00221-008-1415-8subject
Has Abstractpub_date
2008-08-01 00:00:00pages
269-77issue
3eissn
0014-4819issn
1432-1106journal_volume
189pub_type
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