The volitional nature of the simplest reflex.
Recent studies suggest that none of the behaviors of the vertebrate CNS are fixed responses incapable of change. Even the simplest reflex of all, the two-neuron, monosynaptic spinal stretch reflex (SSR), undergoes adaptive change under appropriate circumstances. Operantly conditioned SSR change occurs gradually over days and weeks and is associated with a complex pattern of CNS plasticity at both spinal and supraspinal sites.
Wolpaw
J R
JR
Wadsworth Center for Laboratories and Research, New York State Department of Health, Albany.
Carp
J S
JS
D000818:Animals; D002755:Choice Behavior / Q000502:physiology*; D006801:Humans; D009473:Neuronal Plasticity / Q000502:physiology; D012018:Reflex / Q000502:physiology*