Biomaterial Database

The effects of repeated optokinetic stimulation on human autonomic function. 2000

K Peters, and C L Darlington, and P F Smith

Dept. of Psychology and the Neuroscience Research Centre, University of Otago, Dunedin, New Zealand.

Numerous animal studies have suggested that the vestibular system modulates respiratory and cardiovascular function. However, relatively few studies have examined vestibular-autonomic interaction in humans. In this study we investigated the effects of repeated horizontal (clockwise or anticlockwise) optokinetic stimulation on systolic blood pressure (SBP), diastolic blood pressure (DBP), pulse and latency to circularvection (CV) in humans, and compared the effects with those of repeated exposure to a stationary visual stimulus. Although all subjects experienced CV, neither mean SBP, DBP or pulse differed significantly between the clockwise/anticlockwise optokinetic stimulation and no optokinetic stimulation conditions. However, SBP and DBP changed significantly over the 20 trials in each test session, even when there was no optokinetic stimulation (P < 0.001 in each case). These results suggest that while horizontal optokinetic stimulation does not significantly affect SBP, DBP or pulse in humans, changes in these variables can be induced by trial repetition itself, even when no optokinetic stimulation occurs.

UI	MeSH Term	Description	Entries
D007088	Illusions	The misinterpretation of a real external, sensory experience.	Autokinetic Effect,Autokinetic Illusions,Effect, Autokinetic,Illusions, Auditory,Illusions, Kinesthetic,Illusions, Tactile,Illusions, Visual,Auditory Illusion,Auditory Illusions,Autokinetic Effects,Autokinetic Illusion,Effects, Autokinetic,Illusion,Illusion, Auditory,Illusion, Autokinetic,Illusion, Kinesthetic,Illusion, Tactile,Illusion, Visual,Illusions, Autokinetic,Kinesthetic Illusion,Kinesthetic Illusions,Tactile Illusion,Tactile Illusions,Visual Illusion,Visual Illusions
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009038	Motion	Physical motion, i.e., a change in position of a body or subject as a result of an external force. It is distinguished from MOVEMENT, a process resulting from biological activity.	Motions
D010775	Photic Stimulation	Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.	Stimulation, Photic,Visual Stimulation,Photic Stimulations,Stimulation, Visual,Stimulations, Photic,Stimulations, Visual,Visual Stimulations
D001794	Blood Pressure	PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.	Systolic Pressure,Diastolic Pressure,Pulse Pressure,Pressure, Blood,Pressure, Diastolic,Pressure, Pulse,Pressure, Systolic,Pressures, Systolic
D003971	Diastole	Post-systolic relaxation of the HEART, especially the HEART VENTRICLES.	Diastoles
D004532	Ego	The conscious portion of the personality structure which serves to mediate between the demands of the primitive instinctual drives, (the id), of internalized parental and social prohibitions or the conscience, (the superego), and of reality.	Self,Egos
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man