摘要: It is a common opinion among physiologists that the cerebral blood vessels do not possess effective vasomotor nerve control. The strongest evidence on which this rests has been brought forward by number of English physiologists, notably Roy and Sherrington,1Bayliss Leonard Hill,2Hill Macleod3and Florey.4Several Germans5have also contributed pointing toward same conclusion. On other hand, many important observations are difficult to reconcile with point view have reported investigators from Germany,6from France,7from United States,8and elsewhere.9Our own experiments bring new in favor functional activity fibers pia mater. question whether or control merely academic interest, for clinical conditions such as convulsions