Finck A
Department of Psychology, Temple University, Philadelphia, PA 19122, USA.
Physiologist. 1984;27(6 Suppl):S147-8.
The rate and vigor of the spider heartbeat is controlled by an external pacemaker. A mechanical feature of the spider cardio-vascular system is the production of high serum pressure in the prosoma and the legs. This appears to be the source for leg extension. The lyriform organ on the patella of the leg is sensitive to vibratory and kinesthetic stimuli. This sensitivity depends upon the degree of leg extension. Thus the activity of the heart and the response characteristics of the sense receptor are related. The effect of a supra-threshold vibratory or gravitational stimulus is to produce an inhibition and a tachycardia of the spider heartbeat.
蜘蛛心跳的速率和活力由一个外部起搏器控制。蜘蛛心血管系统的一个机械特性是在前体和腿部产生高血清压力。这似乎是腿部伸展的源头。腿部髌骨上的琴形器官对振动和动觉刺激敏感。这种敏感性取决于腿部伸展的程度。因此，心脏的活动与感觉受体的反应特性相关。阈上振动或重力刺激的作用是抑制蜘蛛心跳并使其心动过速。
