| psychophysics | (n) the branch of psychology concerned with quantitative relations between physical stimuli and their psychological effects |
| Psychophysics | n. [ Psycho- + physics. ] The science of the connection between nerve action and consciousness; the science which treats of the relations of the psychical and physical in their conjoint operation in man; the doctrine of the relation of function or dependence between body and soul. [ 1913 Webster ] |