Recovery of the electrocorticogram of canine brains after complete cerebral ischaemia at 37 degrees and 32 degrees C.
Complete cerebral ischemia was produced in totally isolated dog heads, perfused from a donor dog. The temperature of the isolated brain was kept constant before, during and after the complete ischaemia, at either 37 degrees C or 32 degrees C. At a brain temperature of 37 degrees C electrocortical potentials were found to reappear spontaneously as long as complete ischaemia did not exceed 50 min. In canine brains kept at a temperature of 32 degrees C no reappearance of spontaneous electrical activity occurred if ischaemia exceeded 100 min.
D000818:Animals; D001831:Body Temperature; D004285:Dogs; D004569:Electroencephalography; D066298:In Vitro Techniques; D002546:Ischemic Attack, Transient / Q000503:physiopathology*; D010477:Perfusion / Q000379:methods; D011930:Reaction Time / Q000502:physiology; D013997:Time Factors