Definitions

Question 1

Perception threshold

Answer 1

Minimum concentration of the substance required to provoke a perception, but without identification of the substance

Question 2

Recognition threshold

Answer 2

Minimum concentration of the substance required to produce the recognition (verbal response)

Question 3

Differential threshold

Answer 3

Minimum difference between the two concentrations of the same substance necessary to produce a difference in perception (the difference between the perceived intensity)

Question 4

Saturation threshold

Answer 4

Maximum concentration of the substance over than the perception remains constant (maximum and constant intensity)