Weber-Fechner law related to:

Weber Fechner law: S = K x Log (I) S = sensory perception at coex K = constant (I) = intensity of stimulus at the periphery Perception felt about the intensity of stimulus changes with logarithmic scale of the actual intensity applied at the periphery. Related: Steven's power law S = K x (I)N Sensation felt is propoional to the nth power of intensity of stimulus applied i.e. perception changes as a power function of intensity.