[Electrical characteristics of neurons in the motor region of the cat cerebral cortex].
Electrical parameters of motor cortex neurons were studied in acute experiments on cats. Input resistance of cortical neurons varied from few to some tens of Momega (mean value 11.11 +/- 3.93 Momega). A hyperbolic relation between threshold current and input resistance for cortical neurons was found. Velocity of axon conduction and input resistance are negatively correlated. Time constant of the membrane (to) was 7.1 +/- 3.46 ms. In some neutrons a second time constant t1= 1.65 +/- 0.36 ms was also found. Using result of Rall's model, the electronic length of the dendrite was computed, it was found to be 3.66-0.94 in units of length constant. These data are compared with those obtained on motoneurons. Functional significance of electrical parameters of cortical neurons is discussed.
D000200:Action Potentials; D000818:Animals; D002415:Cats; D004594:Electrophysiology; D005260:Female; D008297:Male; D009044:Motor Cortex / Q000502:physiology*; D009431:Neural Conduction; D011712:Pyramidal Tracts / Q000502:physiology
Elektricheskie kharakteristiki neĭronov motornoĭ oblasti kory bol'shikh polushariĭ koshek