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Vertigo.

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Adult↗

Effect of different vestibular lesions upon body equilibrium function in squirrel monkeys.

By utilizing the squirrel monkey rail test, postoperative compensation status after unilateral saccular macula destruction, unilateral utricular nerve section and unilateral lateral ampullary nerve section, were studied in a quantitative fashion and the results were statistically compared. First, it was confirmed that the preoperative random assignments of subjects were evenly distributed among different experimental categories and therefore inter-categoric statistical comparisons of postoperative status were valid. Minimal effect after the unilateral saccular macula ablation toward the maintenance of body equilibrium was reconfirmed. The utricular input is probably the most important for the maintenance of body equilibrium function, inasmuch as slightly less equilibrium disturbance was found after unilateral lateral ampullary nerve cut even though the difference was not significant.

Animals↗

Standardization of the prone extension postural test on children ages 4 through 8.

The prone extension postural test is a measurement of vestibular functioning that has been used by occupational therapists in assessing children suspected of having vestibular system deficits. The purpose of this study was to standardize the prone extension postural test because no standardized procedures or normative data were previously available for its administration. Reliability and validity were estimated and normative data gathered on 242 normal children ranging in age from 4 through 8 years. Performance involving duration and score on a qualitative scale was recorded. Four and 5 year olds performed similarly and statistically, and significantly differently from 6, 7, and 8 year olds. When a small group of learning-disabled children was compared to a nondisabled group, the prone extension postural test differentiated between the two groups with the exception of the 4 year olds.

Child↗