脳疾患と容積脈波—第一部 脳疾患による末梢の血管運動性偏側性について

PLETHYSMOGRAPHIC STUDIES ON THE CEREBRAL LESIONS:PART. 1. ON THE PERIPHERAL VASOMOTOR LATERALITY CAUSED BY CEREBRAL LESION.

　可搬型光電指尖容積脈波計を用いて，著者等は100例の脳疾患々者の末梢血流状態を研究した。研究は主として兩側指尖間の脈波の振幅の不均等性に關して追究した。

　1．この研究の結果から大腦波質の自律紳純機能に關係のある部位に關して2〜3の知見を得た。すなわち片側性の腦疾患の場合には屡々對側性の血管運動障碍がみとめられた。

We studied peripheral vascular disturbance in 100 cases of cerebral lesion with a portable photoelectric plethysmograph devised for clinical use. Investigation was focussed upon evidence of inequality in amplitute of volu-me pulse obtained from fingertips on both sides.

1. The results of this investigation show clearly that there exists autonomic repre-sentation of peripheral vasomotor regulation in the cerebral cortex. This is detected always as a contralateral vasomotor distur-bance in cases of unilateral carebral lesions. (Lateralization of peripheral vascular response of cerebral origin.)

2. This inequality of volume pulse or laterality appears as vasoconstric-tion when lesions are considered as irritant, and as vasodilatation when lesions seem to be destructive in nature.

These evidences are likely to appear with lesions in the frontal lobe of the cerebrum, namely, in the premotor and motor areas and the orbital sur-face of the cortex. From data ob-tained from lesions in the convexity of the cerebrum, it can be said that the dominant vasomotor regulatory factor is constrictor; whereas in the orbital surface, both sympathicomimic and parasympathi-comimic effects are obtained by irritation.

3. In cases of lesions found in the " basal" part of the brain, a similar response as in cases of cortical lesions is demonstrated.

4. With infratentorial lesion, even if it is located unilaterally, no lateralization of peri-pheral vascular response is elicited.