Disturbed eye movements after whiplash due to injuries to the posture control system.

Self-reports after whiplash often indicate associations with vertigo and reading problems. Neuropsychological and otoneurological tests were applied to a group of whiplash patients (n = 26) and to a carefully matched control group. The whiplash group deviated from the control group on measures of eye movements during reading, on smooth pursuit eye movements with the head in normal position, and with the body turned to the left or to the right.

ABR amplitude and dispersion variables. Relation to audiogram shape and click polarity.

ABR amplitude behaviour to condensation (C) and rarefaction (R) clicks was investigated in normal ears, ears affected by Ménière's disease and ears with high-frequency hearing loss (HF ears). The wave IV-V amplitude-intensity function was steeper in ABRs evoked by R than by C clicks. This may suggest that two different cochlear generator components, one intensity-dependent as well as one polarity-dependent, contribute to click-evoked ABRs.

[Topographic mapping of electric activity of the brain].

Quantitated neurophysiology and topographic brain mapping are reviewed. Certain information on the electrical activity of the brain may be more easily comprehended with the aid of topographic visualization of EEG and evoked potentials. Quantitated neurophysiology promises to make an important contribution to research in several fields of neuroscience, e.

Autonomic disorders in cluster headache syndrome.

The unilateral headache in patients with cluster headache syndrome is associated with a number of autonomic accompanying phenomena. Investigation of sweating of the forehead, salivation, nasal secretion and tearing is described and sympathetic parasympathetic firing in connection with headache attacks is discussed.

Cluster headache: a comparison of the proportions of abnormal recordings for several derived variables in tyramine pupillometry.

Tyramine pupillometry was performed in 27 cluster headache patients and in 45 healthy controls. Asymmetry variables, i.e.