TouchDifferential ThresholdSensory ThresholdsTouch PerceptionTherapeutic TouchAuditory ThresholdPain ThresholdPhysical StimulationMechanoreceptorsStereognosisTaste ThresholdThreshold Limit ValuesAnaerobic ThresholdTime FactorsCalorimetry, Differential ScanningVibrationPsychophysicsThermosensingElectric StimulationAction PotentialsDiscrimination (Psychology)Neurons, AfferentSensory Receptor CellsSensitivity and SpecificityFingersContrast SensitivityReproducibility of Results