PubMed · 5313467
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J Boussens, R Briand. 1970. [Problems posed by the threshold in pendular stimulation].. https://pubmed.ncbi.nlm.nih.gov/5313467/
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Assessment of the otolith-ocular reflex of human subjects involves linear acceleration and/or changes in the orientation of the head with respect to gravity. Several such stimuli are currently under investigation regarding their applicability to the evaluation of patients with dizziness and balance disorders. Discussed in this paper are off-vertical axis rotation, eccentric rotation, pitch and roll rotation, and linear acceleration. For each of these stimuli, basic principles, normative human data, and patient data are described. Although none of these methods are currently established for clinical use, each of them, especially off-vertical axis rotation and linear acceleration, have the potential for developing into a clinically useful method for assessing otolith function in man.
The correlation dimension of optokinetic nystagmus (OKN) eye movements from a normal human subject was computed. Results indicate a value of about 2.8, indicating the possibility of chaotic dynamics in OKN. This was found to differ from the dimension of an artificial OKN signal with the same second-order statistics.
A new optoelectronic system for movement analysis is introduced. This equipment was employed with success during an Austrian-Soviet space flight. The method for the determination of position and orientation is described with the aid of an example, namely the determination of the location of the intersection of a beam of light generated by a helmet-mounted lamp with a screen.