The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation
The act of exciting or putting in motion; the act of rousing up or awakening.
The act of producing excitement (stimulation); also, the excitement produced.
A transition of a nucleus, atom or molecule to an excited state by the absorption of a quantum of energy; the opposite of relaxation
An automatic response to a simple stimulus which does not require mental processing.
The ancestor word corresponding to a descendant.
The descendant of an earlier language element, such as a word or phoneme, in a daughter language.
The descendant of anything from an earlier time, such as a cultural myth.
Reflection or an image produced by reflection. The light reflected from an illuminated surface to one in shade.
Having greater than 180 degrees but less than 360 degrees.
Illuminated by light reflected from another part of the same picture.
Produced automatically by a stimulus.
Bent, turned back or reflected.
To bend back or turn back over itself.
To respond to a stimulus.