速α波優位の基礎律動を有する一脳波パターンに関する研究

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Studies were made on an EEG pattern characterized by the followings : 1. the dominant activity characterized by : a) frequency, 10.5〜13c/s, b) amplitude, ca 20〜60μv, c) phaserelation, good synchronization, d) abundance, moderate to high degree, e) morphology, often sharp, f) topology, occipitaldominant but more or less diffusely distributed, g) reactivity, a good blocking on eye opening ; a slight voltage increase but a minimal slowing on HV., h) variability, fairly constant with respect to its frequency & morphology, but often in a burst-like train. 2. a more or less conspicuous transient a-activity, singly or in a train, 3. a slight to moderate β-activity & a minimal slow activity admixture, 4. an increasing tendency of abundance of the transient α-activity on HV, 5. constancy of the pattern as a whole during the resting period. 1) Series of waves in the occipital traces of EEGs of a normal person and of this pattern were statistically analysed. In the normal EEG, the mean square variations of the upper and lower peaks of waves were equal ; the correlogrammes showed that the upper peaks were positively correlated in a wider range and that wave lengths were not mutually correlated. While in the EEG of this pattern, the mean squave variation of the upper peaks was greatar than that of the lower ; the correlogrammes showed that the upper peaks were correlated only in a small degree and in a shorter range, and that serial two wave lengths were positively correlated 2) EEGs of this pattern were found in one percent of 5000 patients with some or other complaints. Out of them, 36 cases with sufficient clinical information were selected, which included 13 cases of migraine, 7 of epilepsy, 3 of head injury, 3 of psychoneurosis, 2 of Menieres syndrome and 8 others, Among the chief complaints, headaches, paroxysmal or nonparoxysmal, were noted in 27, nausea and vomiting in 18, scotomata in 8 and consciousness disturbance in 7 cases. 3) No EEG of this pattern was found among 47 normal healthy males. 4) The 8 cases followed up. in long time ranges showed long-term stability of this EEG pattern. 5) The EEG pattern was considered as related to a certain pathophysiological states (including constitutional factors) liable to headache.
千葉大学の論文
1965-05-28

速α波優位の基礎律動を有する一脳波パターンに関する研究

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