unconditioned reflex

This is, therefore, an unconditioned reflex.

An unconditioned reflex is one which appears without previous experience; for example, if food is placed in a dog's mouth, it salivates.

Here was an unconditioned reflex.

An animal seeking food and guided only by its unconditioned reflex is reduced to sampling everything in its environment by mouthing it.

They show the anatomical basis of an unconditioned reflex, the gill withdrawal reflex, and suggest the mechanism of a fixed action pattern.

It would salivate as a result of the taste through an unconditioned reflex; and would salivate in response to the sight and smell alone through early conditioning.

A leading role in the performance of unconditioned reflexes, in contrast to the conditioned ones, is played by the lower divisions of the higher nervous system, the subcortical nuclei, brain stem and spinal cord.

His ideas for the how the nervous system works came from his research on the brain, specifically the cortex, and conditioned and unconditioned reflexes, and spurred additional research into the nervous activity that underlies such reflexes.