an organic process that takes place in the body

of or relating to the sensory and motor coordination of an organism or to the controlling nerves

of or relating to or characterizing mental events that have motor consequences or vice versa

show a response or a reaction to something

any reaction that occurs automatically without conscious thought or reflection (especially the undirected behavior seen in psychomotor epilepsy)

a reaction to a crisis or setback or frustration

an excessive reaction; a reaction with inappropriate emotional behavior

a change in the electrical properties of the skin in response to stress or anxiety; can be measured either by recording the electrical resistance of the skin or by recording weak currents generated by the body

a bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigen