It was suggested that human subjects were able to regulate own HR with an assistance of apparatus in several kinds of cardiovascular dysfunctions, such as sinus tachycardia when the cardiac conduction system was within normal limits. With regards to the mechanism of HR BFT, subjects seem to use variety of strategies as influences of central nervous function, endocrine system as plasma catecholamines (specially epinephrine), psychological cues and cognition.特集 : 「動物の心拍リズム」国際シンポジウム発表論文選