Phase-space structure of a thermoreceptor.
We analyze the phase-space structure of a model for thermoreceptors in fish and mammals. As a function of the temperature we identify a period doubling scenario at low temperatures, a regime where an unstable stationary fixed point collides with the attractor and blocks the thermoreceptor, and a transition from period n+1 to period n as the temperature is further increased. The period reduction phenomenon is due to an autoresonance between fast and slow ion channels and shows the features typical for mode locking.
Braun
W
W
Fachbereich Physik, Philipps Universität Marburg, D-35037 Marburg, Germany.
Eckhardt
B
B
Braun
H A
HA
Huber
M
M
D000200:Action Potentials; D000818:Animals; D005399:Fishes; D007473:Ion Channels / Q000378:metabolism; D008322:Mammals; D008954:Models, Biological; D009474:Neurons / Q000378:metabolism; D013696:Temperature; D013823:Thermoreceptors / Q000378:metabolism*
D007473:Ion Channels