Abstract: The invention relates to a method of determining the sympathetic tone including the steps of: measuring an applied stimulation at a threshold value of the stimulation in one or more sympathetic tone-neutral points and measuring an applied stimulation at the same threshold value in one or more sympathetic tone-dependent points. The invention further relates to a system for applying and measuring a stimulation, and the use of a system for applying and measuring a stimulation for determining the sympathetic tone including the steps of: measuring an applied stimulation at a threshold value of the stimulation at one or more sympathetic tone-neutral points and measuring an applied stimulation at the same threshold value of the stimulation at one or more sympathetic tone-dependent points.

Abstract: A method of determining the sympathetic tone, a system for applying and measuring a stimulation, and the use of a system for applying and measuring a stimulation for determining the sympathetic tone are provided. The method of determining the sympathetic tone includes the steps of: measuring an applied stimulation at a threshold value of the stimulation in one or more sympathetic tone-neutral points and measuring an applied stimulation at the same threshold value in one or more sympathetic tone-dependent points. The use of a system for applying and measuring a stimulation for determining the sympathetic tone includes the steps of: measuring an applied stimulation at a threshold value of the stimulation at one or more sympathetic tone-neutral points and measuring an applied stimulation at the same threshold value of the stimulation at one or more sympathetic tone-dependent points.

Abstract: Disclosed is a method for determining the capacity for psychological workload in one or more individuals by (a) determining the level of sympathetic tone in said individual(s) under resting conditions (?), (b) determining the level of sympathetic tone (?) in said individual(s) under a defined psychological workload (Wp), (c) determining the time (?t) it takes said individual to revert from the sympathetic tone level ? under the defined psychological workload Wp, to the sympathetic tone level ? under resting conditions, and (d) expressing the capacity for psychological workload as a function of ?, ? and ?t. The method enables optimization of overall work performance for individuals as well as groups of individuals, and also enables optimization of composition of groups which are to perform demanding tasks. Also disclosed is a computer system, which implements the method of the invention.

Abstract: A method of determining the sympathetic tone and/or level of stress and/or level or warning system sensitivity includes the steps of: measuring an applied stimulation at a threshold value of the stimulation in one or more sympathetic tone-neutral points and measuring an applied stimulation at the same threshold value in one or more sympathetic tone-dependent points. The invention further relates to a system for applying and measuring a stimulation, and the use of a system for applying and measuring a stimulation for determining the sympathetic tone including the steps of: measuring an applied stimulation at a threshold value of the stimulation at one or more sympathetic tone-neutral points and measuring an applied stimulation at the same threshold value of the stimulation at one or more sympathetic tone-dependent points.