  Children with unilateral cerebral palsy have movement impairments that are
predominant to one of their upper extremities (UE) and are prone to a
phenomenon named "developmental disregard", which is characterized by the
neglect of their most affected UE because of their altered perception or
consciousness of this limb. This can cause them not to use their most affected
hand to its full capacity in their day-to-day life. This paper presents a
prototype of a wearable technology with the appearance of a smartwatch, which
delivers haptic feedback to remind children with unilateral cerebral palsy to
use their most affected limb, and which increase sensory afferents to possibly
influence brain plasticity. The prototype consists of an accelerometer, a
vibration motor and a microcontroller with an algorithm that detects movement
of the limb. After a given period of inactivity, the watch starts vibrating to
alert the user.
