Generation of sleep spindles

Spindles are generated due to the capability of thalamic reticular neurons to generate a rebound low-threshold calcium spike and a burst of action potentials in thalamocortical neurons, which then returns to the same thalamic reticular cell as a barrage of excitatory postsynaptic potentials (EPSPs).

The waxing of spindle waves is due to the recruitment of additional cells into the network oscillation.

Periodicity of spindles


Adapted from Fig. 5 from McCormick and Bal (1997)

 

 

 

©1998 BITS OF SLEEP (Demo) : The brain in sleep: Thalamocortical system.