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Query: UMLS:C0036572 (seizures)
 80,221 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The Bender-Gestalt and WISC or WISC-R performances of two groups of 19 emotionally disturbed children matched in age age (9-1 to 16-7) and Full Scale IQ were compared. Each child is one group had a medically documented seizure disorder; a matched child in the other group had no present or past indications of organicity. Neither Bender-Gestalt errors nor Wechsler IQs or Deviation Quotients differed significantly between the two groups. The emotionally disturbed children with seizure disorders could not be differentiated from the other emotionally disturbed children solely on the basis of Bender-Gestalt and Wechsler test scores.
Percept Mot Skills 1978 Aug
PMID:Failure of the Bender-Gestalt and Wechsler tests to differentiate children with and without seizure disorders. 70 48

Accounts of so-called "spontaneous" seizures by individual Mongolian gerbils during open-field tests resemble descriptions of magnesium tetany. A possible association between relative magnesium deficiency and tendency toward "spontaneous" seizures was explored through feeding groups of gerbils different rates of magnesium and subjecting the groups to open-field tests at intervals. Hypomagnesemia was related in degree of severity to length of survival, onset of seizing, and frequency of seizures.
Percept Mot Skills 1978 Dec
PMID:"Spontaneous" seizing in open-field tests by mongolian gerbils fed magnesium at different rates. 74 75

Clinical study of three schizophrenic men without known seizure disorders has heuristic implications, pointing to neurophysiological factors in their somesthetic hallucinations: (a) In two instances the body areas involved in such hallucinations (the abdominal cavity and the top of one foot) also happen to be represented side by side on the "map" of the receptive somesthetic areas at the postcentral gyrus. (b) In all three schizophrenic men the occurrence of their somesthetic hallucinations can be conceptualized along the lines of MacKay's (1970) information flow model for perception in general, with some specific modifications, which center around the key roles of sufficient change occurring in two specific aspects of this model. (c) Further conceptualization is suggested within Grey Walter's (1973) testable model of triple association among Conditional, Imperative and Operant Response--albeit mostly in reverse sequence with respect to somesthetic hallucinations under discussion. These schizophrenic men reveal in their past and present experiences a pattern in which the sequence of events is initiated through changes at the efferent side (restriction of voluntary motility), which trigger afferent experiences, albeit hallucinated ones. Practical implications center around the probably salutary role of voluntary motility performed purposefully and at the person's own pace.
Percept Mot Skills 1977 Feb
PMID:Somesthetic hallucinations and motility in schizophrenia: neurophysiological views and information flow model. 84 Jun 13

Male rats that had displayed limbic seizures following a single pair of systemic injections of lithium and pilocarpine were trained 2 months later on an operant schedule that required differential low rates of responding (DRL). The seizured rats never acquired schedules that required either 6-sec. or 12-sec. inhibition of responses following a reward; these rats displayed more perseverative responding and shorter interresponse times than controls. Histomorphology indicated severe brain damage primarily within the entorhinal cortices (and adjacent amygdala) and dorsal thalamus.
Percept Mot Skills 1990 Feb
PMID:Failure to acquire an inhibitory task following seizure-induced brain damage. 232 26

The "spontaneous" tetanic attacks in magnesium (Mg) deficiency resemble those occurring in pyridoxine (Pyr) deficiency. A common mechanism may underlie both seizure patterns. Nine groups (n = 10) of male Mongolian gerbils that were Mg-deprived, Pyr-deprived, or both were used to explore this possibility. The animals were tested for spontaneous seizing in an open field at four-day intervals over 40 days. By the end of the period, 70% of the gerbils that were both Mg- and Pyr-deprived had seized, and 90% had died. One fatality, but no seizures, occurred among Pyr-deprived groups given 500 to 2,000 ppm Mg in the food. No seizures occurred among the Mg-deprived groups fed 20 to 100 ppm Pyr, though several animals given 20 ppm Pyr died. Deaths and seizures occurred within Mg-deprived groups fed more than 100 ppm Pyr. A possible role of Pyr in Mg metabolism is discussed.
Percept Mot Skills 1988 Feb
PMID:Dietary pyridoxine loadings affect incidence of "spontaneous" seizures among magnesium-deprived Mongolian gerbils (Meriones unguiculatus). 336 54

Transient, focal, epileptic-like electrical changes in the temporal lobe, without convulsions, have been hypothesized to be primary correlates of religious experiences. Given these properties, direct measurement of these phenomena within the laboratory should be rare. However, two illustrated instances have been recorded. The first case involved the occurrence of a delta-wave-dominant electrical seizure for about 10 sec. from the temporal lobe only of a Transcendental Meditation teacher during a peak experience within a routine TM episode. The second case involved the occurrence of spikes within the temporal lobe only during protracted intermittent episodes of glossolalia by a member of a pentecostal sect . Neither subject had any psychiatric history. These observations are commensurate with the hypothesis that religious experiences are natural correlates of temporal lobe transients that can be detected by routine EEG measures.
Percept Mot Skills 1984 Feb
PMID:Striking EEG profiles from single episodes of glossolalia and transcendental meditation. 637

A set of verbal and visual-graphic learning tasks sensitive to differential cerebral hemisphere impairment was administered to 50 patients with epileptogenic focus localized in either the left or right cerebral hemisphere. Patients with left-hemisphere seizure-foci and those with generalized seizures performed the verbal task significantly more poorly than did patients with right-hemisphere epileptogenic foci. In contrast, there were no significant differences between groups on the non-verbal tasks. Results are discussed in light of findings in the literature relating cognitive dysfunction to epilepsy and with regard to the possible contribution of such dysfunction to patients' complaints.
Percept Mot Skills 1983 Jun
PMID:Cerebrally lateralized epileptogenic foci and performance on a verbal and visual-graphic learning task. 641 Mar 53

A recently proposed diagnostic class, psychotic trigger reaction, is deduced from careful clinical studies of eight white men, who upon a very specific trigger stimulus committed murder or attempted to (and in one case also rape). The new class is defined as a sudden ego-alien, motiveless (at least with respect to aggression), motor-wise well organized, violent complex action without emotional concomitants. The action is evoked (not provoked) by an individually unique stimulus within a specific context reviving repeated past traumatic experience. Typically there is no (significant) loss of consciousness and practically full recall. Observed are first-time hallucinations (visual, auditory, tactile, somesthetic, but not olfactory as in temporal lobe epilepsy) and signs of imbalance in the autonomic nervous system (loss of bladder control, ejaculation, profuse sweating, nausea). Only four of these men had previous psychiatric diagnoses (and then various ones) or abnormal EEGs at some time in their lives. Variety in prior diagnoses would be consistent with a seizure-like disorder, here specifically implicating an imbalance in functioning between limbic and frontal lobe systems. Clinical tests for the latter were prevailingly indicative of dysfunctioning. A detailed clinical analysis of the violent acts within their context suggests behaviors are analogous to certain limbic system mechanisms, especially the kindling phenomenon.
Percept Mot Skills 1984 Aug
PMID:Specific stimulus-evoked violent action in psychotic trigger reaction: a seizure-like imbalance between frontal lobe and limbic systems? 649 48

The Norwegian author Tryggve Andersen (1867-1920) had epilepsy, but was not aware of the diagnosis until late in life. In one novel, Towards Night (Mot Kvaeld), published in 1900, he described in detail nocturnal attacks with formed visual hallucinations as the initial event, seeing always the same face. He was familiar with the works of Ernst Hoffmann and probably also with those of Fiodor Dostoyevsky, but deduction of the literary influence leaves a precise description corresponding to an epileptogenic focus in the right posterotemporal region. Knowledge of his work may elucidate the subjective experience of initial epileptic manifestations, uncontaminated by previous knowledge of what can be expected in epilepsy. The descriptions provided by Andersen's writings are compared with more formal contemporary definitions of seizure events.
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PMID:Tryggve Andersen: epileptic hallucinations in the 1890s, fact or fiction? 761 16

The hypothesis of vectorial hemisphericity predicts that left hemispheric intrusions of the right hemispheric equivalent of the sense of self should be associated with the experience of a "presence" of someone else. The neurophenomenological profile of a woman whose medical history satisfied these theoretical criteria (verified electrical anomalies that could encourage phasic discharges within the right temporal lobe and atrophy within the left temporoparietal region) is presented. In addition to interactions between electrical seizures and thinking, she reported a long history of sensed presences, ego-alien intrusions, and "sudden knowing of the subsequent sequences of seizures" before they occurred clinically. The existence of these neurocognitive processes demands a reevaluation of the psychiatric default explanations of "hysteria" and questions the belief that "awareness during seizures" or "premonition of subsequent somatosensory experience" contraindicates an epileptic process.
Percept Mot Skills 1994 Jun
PMID:The sensed presence as right hemispheric intrusions into the left hemispheric awareness of self: an illustrative case study. 789 5


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