The SIPT Assessment and it’s precursor the SCSIT (Southern California Test of Sensory Integration) include the test of Post Rotary Nystagmus. 

Norms for adults in the research include:

Shuer, J., Clark, F. A., & Azen, S. P. (1980). Vestibular function in mildly mentally retarded adults. American Journal of Occupational Therapy, 34(10), 664-670. ← Abstract

The purpose of this study was to compare the duration of nystagmus in mildly mentally retarded and normal adults as measured by the Southern California Postrotary Nystagmus Test. The results revealed that the retarded males demonstrated attenuated duration of nystagmus. These findings support the need for further investigation of possible sensory integrative deficits in this population so that proper treatment can be provided.

A comparison of duration of nystagmus as measured by the Southern California Postrotary Nystagmus Test and electronystagmography.

Keating NR. Am J Occup Ther. 1979. Show full citation


The Southern California Postrotary Nystagmus Test (SCPNT) and electronystagmography are methods used to evaluate one aspect of vestibular function. The SCPNT is based on the examiner’s observation of eye movements and is used in combination with other information as part of a diagnostic battery for children with learning disorders. Electronystagmography is the permanent recording of eye movements through the use of surface electrodes. In this study. The SCPNT and an electronystagmograph were used to record postrotary nystagmus in 20 normal females aged 25 to 30. A significant correlation was found between the two tests for both duration and excursion. In addition, scores of both tests were compared for four normal and for four learning-disabled girls aged 7 to 8. The only significant correlation found was in terms of duration in the normal girls. Results were discussed in terms of factors affecting observation of eye movement, and differences between the nystagmus response of adults and children.

The Southern California Postrotary Nystagmus Test and electronystagmography under different conditions of visual input.

Randomized controlled trialNelson DL, et al. Am J Occup Ther. 1984.Show full citation


This study assessed the Southern California Postrotary Nystagmus Test (SCPNT)-stimulated nystagmus under three conditions of indoor illumination (bright, dim, and dark), and it studied the concurrent validity of SCPNT and electronystagmographic (ENG) measures of nystagmus duration and excursion. Eighteen adult subjects received three sets of rotations to the left under different lighting conditions in a counterbalanced order. The duration and excursion of the SCPNT were monitored under the bright and dim conditions, and ENG-recorded duration, excursion, frequency, slow-phase velocity, and average intersaccadic interval were measured under all three lighting conditions. No significant differences were found between nystagmus duration or excursion under the bright and dim conditions, but highly significant differences were found between the dark condition and the other two conditions. The correlation between ENG-recorded duration and SCPNT visually monitored duration across bright and dim conditions was .73, and the correlation for excursion was .24. These results suggest that occupational therapy researchers and clinicians need not question the validity of ENG recordings under different indoor lighting conditions, and suggest that the concurrent validity of ENG recordings and SCPNT measures requires more study.