The invention relates to an assistance device intended for a person (1) suffering from motor disorders of neurological origin, comprising:an accelerometer suitable for being worn by the person to measure accelerations； andstorage means storing a plurality of previously defined alert acceleration threshold values； andmeans (5) for emitting an auditory stimulation perceptible to the person wearing the accelerometer； andcalculation means configured to perform the following steps:a) determine a posture of the person from the measured accelerations；b) compare the accelerations measured by said accelerometer in the first direction in relation to at least one anticipatory acceleration threshold value associated with said posture；c) command the emission of an auditory stimulation as a function of the crossing of said anticipatory acceleration threshold value associated with said posture for a determined time associated with said anticipatory acceleration threshold value.
