Showing papers in "Electroencephalography and Clinical Neurophysiology in 1972"

TL;DR: It was found that the development of motor seizures by stimulation of the amygdala resulted in an increased ability of the contralateral amygdala, and the septal area, but not of the hippocampus, to drive motor seizures when stimulated (“transfer”).

TL;DR: It was found that stimulation of more than one area increases the rate of seizure development, whereas disrupting inter-limbic connections retards seizure development.

TL;DR: Rats with multiple recording and stimulating electrodes were stimulated electrically in the amygdala, hippocampus and reticular formation to determine the threshold at which after-discharges were produced in the vicinity of the stimulating electrode, and reduction of AD thresholds resulted in an increase in the AD threshold in the contralateral hippocampus.

TL;DR: The hypothesis is advanced that after-hyperpolarization is the mechanism of diminution of inter-spike interval variability, the duration of after- HyperPolarization being correlated with the lower limit of motoneurone working frequency.

TL;DR: Preliminary findings from such a study in a 23-year-old female subject with moderately controlled major motor seizures of frontoparietal origin are reported, with a striking enhancement of the rhythm's occurrence, differentiation from simultaneously recorded alpha rhythm activity, and a marked suppression of seizures.

TL;DR: Averaged evoked responses to auditory stimuli were obtained in simple reaction time and vigilance tasks, as well as a no response control condition, to reflect different functional roles of sensory evoked potentials and association cortex potentials.

TL;DR: This study is based on 691 neonatal EEGs of 270 children whose clinical course was followed from 3 to 14 years: 110 were born at 36–38 weeks of gestational age (pre-term) and 160 wereBorn at or after 39 weeks (full-term).

TL;DR: In the course of numerous polygraphic recordings made on normal subjects and patients with sleep disturbances, several vegetative and somatic phenomena which tended to oscillate or repeat themselves periodically every 20–30 sec during sleep are observed.

TL;DR: Factor analysis of the EEG band scores proved that each σ-, α-, β1- and β2-band component of EEG was of one-factor structure, all the correlation coefficients being approximately +0.9 at each.

TL;DR: A surface-negative transepidermal steady potential of approximately 30 mV exists in all areas of cephalic skin and may be superimposed upon this resting potential following sensory stimulation and probably reflect sweat gland activity.

TL;DR: Results are deemed encouraging in the further analysis of natural or specifically trained behaviors as they relate to the distinctive hippocampal theta and desynchronization patterns.

TL;DR: Although their thalamocortical projections and correlated behavioral states are relatively discrete, their functional origins both appear to reside in a mechanism concerned with the specific suppression of phasic motor activity.

TL;DR: Satosensory evoked potentials to the lateral popliteal nerve were studied in 41 normal subjects and it was inferred the component 1 would be the postsynaptic potential of the primary response mediated by the specific thalamo-cortical projection system and would correspond to the component 2 of the medial nerve SEP.

TL;DR: The general rules for intramodal and cross-modal effects hold true for the individual subjects in nearly all cases, although within-subject variability was considerable and the responses of one particular subject tended to be quite erratic.

TL;DR: Fast wave sleep is associated with changes in the regulation of postural, respiratory and thermoregulatory muscle activities in unrestrained cats sleeping at different environmental temperatures.

TL;DR: A study of the organization of the nigro-caudate inflow has shown that responsive units are driven by stimulating electrodes placed in the posterior as well as the anterior parts of SN, and theresponsive units are predominantly found in the medial two-thirds of the head of caudate nucleus.

TL;DR: Purkinje cells in the posterior vermian cerebellum, which identified themselves in extracellular micro-electrode recording, showed significant decreases in rate of both simple and comples spike discharge when cats went from waking to synchronized sleep, consistent with the rest hypothesis of sleep.

TL;DR: The distribution and latency of the initial positive potential is different from that of scalp-recorded somatomotor responses and favors an intracranial origin and, with its positive polarity and short latency, would be compatible with a response originating in subcortical regions.

TL;DR: Monkeys with chronically implanted cortical and subcortical electrodes were given the anticholinesterase compound, soman, by intramuscular injection and diazepam was administered intravenously to decrease seizure activity and all convulsions were abolished.

TL;DR: It is suggested that the “late positive wave” is a return of prestimulus contingent negative variation (CNV) to baseline and that this, occuring selectively following relevant stimuli, constitutes the EEG sign of selective attention paid to the stimulus.

TL;DR: The effects of selective attention on visually evoked cortical responses (VERs) were investigated under conditions where transient changes in arousal level and peripheral orienting factors were reduced to a minimum to discuss the processing of sensory information in the peripheral and central nervous system.

TL;DR: From the standpoint of accuracy, the computer scoring system has achieved a satisfactory performance level and may be considered as a useful alternative to visual sleep stage scoring.

TL;DR: The evolution of cortical activity was studied from 0.6 of term in utero in eleven foetal lambs, and through most of parturition and the early post-partum period in two newborn lambs.

TL;DR: Slow potential changes developed within 2–4 days in response to both warning and discriminative stimuli, reflecting a learned association between tone stimuli and the imperative the WS and DS appeared later and was reflected by a decreased response to DS and/or increased response to WS.

TL;DR: On discute la possibilite de son homologie avec le rythme mu (rolandique en arceau) of l'homme a l'interieur de l'aire somesthesique primaire SI, mais elle ne fait pas partie du foyer.

TL;DR: It is suggested that serotonergic systems can play a role in the photomyoclonic syndrome in Papio papio, and both drugs activated spontaneous epileptiform electrographic abnormalities.

TL;DR: The results of this study indicate that CHR under red light is delayed more than under blue light and the result is interpreted in terms of a greater cortical arousal following the presentation of red light.

TL;DR: Examination of relationship between firing pattern and firing rate in a population of identifiable units indicates that, for simple spikes of cerebellar Purkinje cells, changes in firing rate account for differences in firing patterns observed with behavioral state changes.