Acta oto-laryngologica
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Saccades, smooth pursuit and angular acceleration induced nystagmus were analysed quantitatively in 10 patients with speech dyspraxia. The saccades were less accurate, had a prolonged reaction time and showed a tendency to reduced peak velocity, though only contralateral to the lesion. ⋯ The findings show that a lesion in the frontal eye field can produce various oculomotor disturbances, in which the triggering of eye movements and their control, and pacing of the various movement sequences are disturbed. In addition, anticipation of a movement pattern requiring volition may be greatly impaired.
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Acta oto-laryngologica · May 1980
The mechanism of physiological height vertigo. I. Theoretical approach and psychophysics.
A theory is presented supporting a geometrical explanation of physiological height vertigo as a 'distance vertigo' created by visual destabilization of posture when the distance between the observer and visible stationary contrasts becomes critically large. Though height vertigo is generally regarded as a psychopathological process, we hypothesize that it might instead result from an intersensory mismatch when visual information is at variance with vestibular and proprioceptive inputs. ⋯ Physiological 'distance vertigo' must be distinguished from psychological 'acrophobia'. Its postural consequences may be ameliorated by strategies gleaned from knowledge of its mechanism such as providing nearby stationary contrasts in the peripheral visual field.
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Acta oto-laryngologica · Jul 1976
Neural damage in the guinea pig cochlea after noise exposure. A light microscopic study.
Neural damage produced by exposure to 8 kHz octave-band noise was studied by light microscopy in guinea pigs. Abnormal nerve endings were found beneath both inner and outer hair cells within 24 hours after exposure at either 118 or 120 dB SPL. In areas where the organ of Corti was destroyed degeneration of myelinated nerve fibers was seen immediately after 24-hour exposures. ⋯ At survival times as long as two months nerve fibers coursing near capillaries were still present in extensively damaged areas. In three animals nerve fibers which had apparently regenerated into regions where the sensory epithelium was destroyed were found distal to the habenula perforata. Evdence of regenerative activity was also noted in the osseous spiral lamina.
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Acta oto-laryngologica · Jun 1974
Randomized Controlled Trial Clinical Trial Controlled Clinical TrialDecongestion of nasal mucous membranes by oral medication in acute rhinitis. A rhinomanometric study to demonstrate synergism between antihistamines and adrenergic substance.
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Acta oto-laryngologica · Nov 1973
Randomized Controlled Trial Clinical Trial Controlled Clinical TrialEffect of aminophenazone, codeine and diallymal on pain occurring in children after adeno-tonsillectomy. A double-blind study.