Journal of neurology
-
Thresholds of non-painful and painful perception for electrical stimuli are not altered significantly during dorsal column stimulation either in the area of induced paresthesia or outside it. After long term stimulation of the dorsal column the thresholds for stimuli are significantly higher within the area of induced paresthesia but not outside it. Median nerve evoked somatosensory cortical potentials are not altered by conditioning or simultaneous DC stimulation. During DCS in three of eight patients only the vibration evoked cortical potentials were attenuated in the early three components of the potential.
-
Journal of neurology · Apr 1976
[Investigations on the Variability of the phasic pupillary light reflex (author's transl)].
Infrared pupillography was used to determine physiological time parameters of the direct phasic light reflex in 101 normal subjects. These parameters include latency, contraction and redilatation times as well as total reaction time, measured in response to 4 different light stimulus intensities. A total of more than 4000 pupillary stimulations in these subjects was analyzed statistically. ⋯ No sex dependent effect on physiological time parameters was found. In addition, no interaction among light stimulus intensity, age and sex could be detected. Possible applications of the method for clinical neurological examination are discussed.
-
Journal of neurology · Jan 1976
Case Reports[Intracranial and spinal hemorrhage in haemophilia (author's transl)].
Among 234 hemophiliacs, 14 patients (5.9%) with intracranial and 1 patient (0.4%) with intramedullary hemorrhage were observed and examined. The average age at the time of hemorrhage was 17 years in patients with severe hemophilia and 43 years in patients with moderate hemophilia. The patients with mild hemophilia and intracranial bleeding were 5 and 58 years old, respectively. ⋯ Only in 1 case with an acquired inhibitor did a local hematoma develop at the site of puncture for the angiography. The same diagnostic procedures should be performed after substitution therapy with anti-hemophiliac plasma in a hemophiliac without inhibitor as in non-hemophiliacs if intracranial or intramedullar bleeding is suspected. In hemophiliacs with an anticoagulant, angiography or lumbar puncture should be performed only in exceptional cases.
-
Journal of neurology · Jan 1976
[Cerebral embolism and psychosis with special reference to cardiac surgery (author's transl)].
Cerebral embolism can manifest itself in certain cases as pure psychosis. In the absence of neurological symptoms it might be mistaken for schizophrenia or manic-depressive psychosis. Cardiac disease and cardiac surgery involve a high risk of embolism. ⋯ Patients who develop these "late" psychoses have a significantly higher correlation with endogenous psychoses in their family histories. On the psychopathological level--in the absence of disturbances of consciousness and orientation--it is not possible to differentiate between "exogenous" and "endogenous" psychosis. A special type of psychopathological reaction is dependent, as in neurological disease, on the severity of brain damage, its localization and on hereditary factors.