作者: J.F. Vibert , F. Bertrand , M. Denavit-Saubié , A. Hugelin
DOI: 10.1016/0006-8993(76)90668-5
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摘要: Abstract Results of the preceding paper32 suggest that bulbo-pontine respiration related units (RRU) could be classed into 4 populations according to relation their peak firing frequency respiratory cycle: one inspiratory (I) and 3 expiratory (E) (early, mid late). A further study spatial distribution is reported. Recorded totalling 26, 520 were distributed through a matrix unitary cubes which about 2, 000 found within limits medulla pons. Both percentage density non-respiratory estimated in each cube. Statistical analysis unit showed high probability finding RRU certain regions. The I E separate was high, whereas there no better than chance for recording types separately from 2 others. Therefore, only two populations, E, considered analysis. thresholding technique applied figures demonstrated definite limit populations. computerized, three-dimensional (3-D) reconstruction outer surfaces networks half medullary system consisted contigous uninterrupted columns extending cervical junction up pneumotaxic system. main body population caudal third dorsolateral part bulbopontine region, while middle ventromedial position. have rostral extensions run parallel axis brainstem give rise several lateral branches; these lie close contact interdigitate extensively, especially region. From networks, progressive increase levels observed towards core; it inside both aggregate foci (HDF). Large HDF population. Smaller scattered throughout medulla; I, lesser extent invade surround sensory motor nuclei roots branchial nerves.