Analysis of Thermal Vestibular Responses in the Cat

Proctor, Leonard R.; Carli, Thomas; Davis, Sheldon Emmor

doi:10.1177/000348947208100113

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…15,42,43 Future study of dysrhythmia may benefit from analysis systems that provide an efficient, objective, and standardized method for identifying and scoring this phenomenon. 8,15,[42][43][44]…”

Section: Discussionmentioning

confidence: 99%

“…A nystagmus beat was defined as an interruption of eye movement in one direction by a faster movement in the opposite direction. 8 Dysrhythmia was considered to be present whenever nystagmus beats were intermittently absent or severely distorted. If the caloric test response was completely absent on either side, no dysrhythmia score was assigned to this side.…”

Section: Methodsmentioning

confidence: 99%

“…Dysrhythmia can be defined as a disruption of orderly nystagmus. It is characterized by momentary cessations of eye movement, marked beat-to-beat variations in slow-phase eye speed, or other departures from the orderly alternation of uniform slow and fast phases of nys-tagmus [1][2][3][4][5][6][7][8][9][10] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

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Dysrhythmia of Caloric Nystagmus

Proctor

Lam

2002

The Laryngoscope

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Dysrhythmia frequently interferes with valid and accurate interpretation of the caloric test. Current methods of "mental alerting" frequently fail to eliminate dysrhythmia. The presence of dysrhythmia appears to be a strong predictor of an abnormal caloric test result, and there is a moderate correlation between dysrhythmia and response intensity. Nevertheless, our results suggest that dysrhythmia is specific to individuals, rather than simply a manifestation of peripheral vestibular disease or a correlate of alertness or response intensity.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Dysrhythmia of Caloric Nystagmus

Proctor

Lam

2002

The Laryngoscope

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“…However, its occurrence in some normal subjects rules out equating dysrhythmia with vestibular system pathology (Hammersma 1957;Clement 1970;Jongkees 1973). Dysrhythmia is typically evaluated subjectively (e.g., Lidvall 1961), though methods for quantifying it have been suggested (Proctor, Carli, and Davis 1972;Henriksson et al 1976). Dysrhythmia is lessened by maintaining mental alertness (Mahoney, Harlan, and Bickford 1957;Lidvall 1961Lidvall , 1962Collins 1965aCollins , 1965b, by minimizing visual suppression (Stahle 1956;Riesco-MacClure and Stroud 1960;Henriksson et al 1972), and by counteracting habituation (Forssman, Henriksson, and Dolowitz 1963;Forssman 1964;Henriksson et al 1972).…”

Section: Slow-phase Eye Speed (Ses)mentioning

confidence: 99%

Vestibular Dysfunction and Psychopathology

Levy¹,

Holzman²,

Proctor³

1983

Schizophrenia Bulletin

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A review of the empirical findings linking vestibular response abnormalities to psychopathology, and particularly to schizophrenia, indicates that these data do not unequivocally document the presence of peripheral or central disease of the vestibular system in any patient group. The reasons for this ambiguity include: use of imprecise stimulation techniques, inaccurate measures of responsiveness, unreliable measures of quantification, and the absence of experimental control over extravestibular variables. Future directions for research in this area are discussed, including the localizing information derived from properly conducted tests of the vestibulo-ocular reflex in studies of oculomotor function.

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