Showing papers in "Electroencephalography and Clinical Neurophysiology in 1957"

TL;DR: Records from a large number of nights in single individuals indicated that some could maintain a very striking regularity in their sleep pattern from night to night, and that body movement, after rising to a peak, dropped sharply at the onset of rapid eye movements and rebounded abruptly as the eye movements ceased.

TL;DR: It is suggested that chlorpromazine has a depressant action on the brain stem reticular system and that this action may be related to its anti-adrenaline properties and that small doses have an excitatory action which can only be observed before the depressants action has appeared.

TL;DR: It is concluded that the effects of hypothalamic heating are mediated by common relays influencing both gamma motor and cortical activity, and the muscle spindle test has been found to be a useful index of that system.

TL;DR: The study confirms that photic stimulation can assist in the analysis of changes in the EEG during perceptual or mental activity, by selectively augmenting specific rhythms so that their behaviour can more readily be observed.

TL;DR: Steady potential differences of cerebral cortex in rats and guinea-pigs were measured during ontogenesis and the possibility of eliciting a spreading depression by topical application of KC1 to the cortical surface in animals of various ages was studied.

TL;DR: Examination of differences in frequency pattern which appear during clinic changes suggest that the disorganization associated with the more severely and acutely disturbed is related to organization among various cortical areas rather than to variability of pattern as recorded successively from a single area.

TL;DR: The electrical responses in the awake cat reported by us agree qualitatively with those seen by Gloor in the animal under Pentothal anesthesia and seems similar to that produced by stimulation of the reticular activating system.

TL;DR: The fact that cortical focal epilepsy requires mainly a strong diencephalic protection (phenobarbital, diphenylhydantoin, Phenurone, Anirrit) suggests on the other hand that even cortical jacksonian epilepsy may depend on diencesphalic hyperexcitability.

TL;DR: The evidence suggests the presence of large projections between ventral and dorsal regions of the hippocampus through which the ventral hippocampus may exert its influence on patterns of intra-hippocampal integration and confirms previous histological studies that a bilateral efferent pathway exists through the stria medullaris from the entorhinal area.

TL;DR: It is postulated that the central nervous system stimulating properties of methamphetamine and cocaine observed clinically are due to their sensitizing effect upon adrenergic component of the reticular activating system.

TL;DR: The after-effect following the initial response of a recruiting series is associated with increased excitability and the negative D.C. shift following brief repetitive stimulation and the positive one following prolonged (10–15 sec.) stimulation are associated with decreased excitability for a test recruiting series.

TL;DR: Data from the continuous, selective recording of the alpha component of the EEG and palmar conductance gave highly significant statistical support to the hypothesis that an inverted-U relationship exists between these two variables.

TL;DR: Discussion has focused on the significance of the suggestive differences in the pharmacological and physiological organization of cortical synapses in man and cat as they relate to hypotheses of drug actions determined solely in the latter species.

TL;DR: Electroencephalograms made during cataplectic attacks and an attack of sleep paralysis were normal, and actual sleep was uncommon under the circumstances in which the recordings were made.

TL;DR: Six cats with implanted electrodes, classically conditioned to paired sound and shock, demonstrated differential EEG desynchronization on a background of EEG synchrony associated with behavioral sleep to demonstrate auditory discrimination in sleep.

TL;DR: The fact that on close examination of the wave forms, some of the components appeared common to each of the phenomena, combined with the closeness of the latency measurements, suggest that lambda waves may have more in common with some part of the arousal mechanism than with simple eye movement.

TL;DR: A new finding was obtained in this, study: the spontaneous appearance without any stimulation of repetitive discharges at the frequency of the photic flashes and almost exclusively recorded from the reticular formation.

TL;DR: Chlorpromazine not only proved an effective blocking agent as far as the behavior was concerned, but also abolished or minimized the appearance of the low amplitude fast activity as well as the paroxysmal subcortical activity.

TL;DR: The evidence suggests that the factor held in common by the two forms of treatment is the derangement in function of the thalamo-frontal system, temporary in the case of ECT, permanent in leucotomy.

TL;DR: The findings are in general accord with prevailing opinion, give direct confirmation of the importance of the midline nuclei, and show that the dorsomedial nuclei are not essential to recruiting.

TL;DR: All manifestations induced by the 6-Azauracil have regressed when the drug was discontinued, and children appeared more susceptible than adults to its toxic manifestations.