Showing papers in "Electroencephalography and Clinical Neurophysiology in 1974"

TL;DR: Fifteen distinct components can be identified in the scalp recorded average evoked potential to an abrupt auditory stimulus, and seem to represent widespread activation of frontal cortex.

TL;DR: Evidence shows that human auditory attention is not mediated by a peripheral gating mechanism and that attention directed toward auditory stimuli causes a substantial increase in the N1 and P2 components of the auditory evoked potential without any change in preceding components.

TL;DR: The theta activity that occurs in the presence of eserine and curare was found to have a different amplitude and phase profile from that in the freely moving rat.

TL;DR: The results point to the preponderant role of the cerebral cortex, particularly that of its frontal portion, in elaboration of generalized epileptic attacks.

TL;DR: This automation of clinical electroencephalography is well known book in the world, of course many people will try to own it and this is it the book that you can receive directly after purchasing.

TL;DR: It is believed that under natural conditions of movement of higher animals and man, in addition to differences in thresholds another more flexible mechanism of selective activation of motoneurones is employed and prevents fatigue during prolonged contraction of a muscle by causing substitution of MUs through changes in posture.

TL;DR: The purpose of the present study was to confirm these sites of generation for man by comparing electrocochleographic responses with clinical evidence in patients with various types of brain lesion, e.g. brain-stem tumours in adults and brain- stem damages in severely retarded infants.

TL;DR: Over all subjects the total EEG occurred with lower mean amplitude over the left hemisphere in all experimental conditions, but its alpha component was symmetrically distributed while subjects were relaxed, but suppressed more over theleft than the right while subjects undertook mental arithmetic.

TL;DR: Tests were conducted to determine whether the two-burst pattern occurs in movements of different speed, elicited by varying the distance to target and the inertial load, and a two- Burst pattern was recognizable on practiced moves under all conditions.

TL;DR: Micro-electrode recordings of unit firing and local slow waves from the precentral motor cortex of chronically implanted, sitting macaque monkeys disclosed the occurrence, during drowsiness, of focal epileptic events with the typical pattern of 3/sec spike-and-wave discharges, lasting 5–17 sec and associated with tonic eye movements.

TL;DR: It is suggested that levels of follicle stimulating hormone (FSH), luteinizing hormone (LH) or gonadal steroids cannot be the only determinants of the sex differences observed and the absence of the Y chromosome may be associated with the female AER pattern.

TL;DR: In this paper, chronic bipolar electrodes were implanted in forebrain structures of mice including dorsal hippocampus, dorsalfrontal cortex, dorsal-lateral thalamus and septum and the development of both EEG and behavioral sequelae of withdrawal was monitored for 6-8h.

TL;DR: During arithmetic and reading a more complex organization of the EEG within the fast frequencies and changes in the distribution of frequency bands in the subalpha range were found.

TL;DR: The coronal topography of the auditory evoked response was studied in 26 normal subjects and 3 patients with hemispheric lesion which definitely involved Heschl's gyrus, confirming the auditory cortical origin of the responses.

TL;DR: It was concluded that the origin of the convulsive discharges in this animal model is most likely cortical, and it is proposed that similar mechanisms are at work in human generalized corticoreticular epilepsy.

TL;DR: Correlations of the percentage change in CNV magnitude with rate of nicotine intake and with degree of extraversion suggested that the rate of Nicotine intake in extraverted smokers was slower and associated with a stimulant effect while in introverted smokers the rate was faster andassociated with a depressant effect in terms of changes in C NV magnitude.

TL;DR: The findings indicate that EEG autospectra show correlates to a portion of the patients having the primary diagnosis of schizophrenia in this study, which points to the possibility that spectral analysis of the EEG could ultimately prove useful in differentiating between the disorders which are currently subsumed under the general heading of schizophrenia.

TL;DR: A brain-stem reflex elicited by acoustic stimuli in voluntarily activated head muscles which occurs regularly in the muscles of the jaw is called the acoustic jaw reflex, and is similar to or identical with that of the electrically provoked linguo-mandibular reflex.

TL;DR: It is concluded that the left and right inferior frontal areas of nonstutterers and stutterers performed differently even when theStutterers were not approaching a moment of stuttering, and also when they were making identical decisions about the “expectancy” of having difficulty speaking a word although no overt motor speech was required.

TL;DR: The phenomenological logical results indicate a net inhibitory influence by the fastigiobulbar pathway and an excitatory action by the dentatophalamic path to the ventral hippocampus, however, statistical tests of the reliability of these effects suggest that such a model may be oversimplified.

TL;DR: There is very little direct, linear EMG infiltration of the EEG signal below 14 c/sec during tonic contraction of individual muscles unless the EEG electrode is extremely close to a contracting muscle, according to autospectral and coherence values determined.

TL;DR: The effects of active movement were widely distributed over both hemispheres and involved the late “non-specific” components of the SER.

TL;DR: Observations are compatible with the hypothesis that reduction of desynchronizing drive exerted by the reticular formation upon the cortex may represent an important factor in the genesis of bilaterally synchronous generalized spike and wave discharge in animals and man.

TL;DR: It is emphasized that the overall system bandpass should extend to 3 kc/sec when studying the early components and when estimating the onset latency of the surface negative N 1 component.

TL;DR: Using the relaxation activity as an indicator of the dynamic spindle sensitivity, it is concluded, that a remote muscle contraction in normal and in spastic human subjects affects a specific dynamic gamma drive to muscles which are not involved in posture in movement.

TL;DR: The patients showed a great excess of sleep stages 3 and 4, characterized by high voltage EEG slow waves, and evidence of raised nocturnal plasma growth hormone levels, but the EEG abnormalities returned only very slowly towards normal after the patients became euthyroid.

TL;DR: Both spontaneous and evoked activity changes were indicative of rapid development of acute tolerance to ethanol, and differed markedly with the different solutions, despite the same total dose; this may explain divergent observations by various investigators in the past.

TL;DR: Two experiments demonstrate two discrete pathways for the conduction of frequency-following responses (FFR) from the cochlear nucleus to the inferior colliculus and the contralateral lateral lemniscus and inferior collisulus.

TL;DR: The conclusion is reached that vision does not form part of a continuous feedback system operating to control constant isometric contractions and probably acts through mechanisms which have not so far been recognized and controlled.

TL;DR: This patient's polygraphically recorded sleep patterns are similar to the sleep patterns of experimental animals with raphe lesions, and a well defined infarction destroying the pontine and midbrain portions of the raphe nucleus is revealed.