Physical and occupational therapists use this test to verify manual function to assess and quantify the unilateral gross manual dexterity in children and adults. Research involving the LMC integrated with the Box and Block Test (BBT) has emerged recently. Hand dexterity in patients with upper limb motor disorders can be assessed from programmed tasks with graphic objects added to the virtual world. Therefore, it provides a new interaction between the user and the computer, allowing for more natural and touch-free interaction. For this reason, this remote sensing technology has shown promise for the rehabilitation field as it does not require the patient to wear motion detection devices (e.g., gloves with force and feedback sensors). The LMC allows measuring the motor performance of these people, such as reaction time, bimanual coordination, and the sequence of movements performed with the hands and fingers. Due to this extensive repertoire of gestures that LMC can detect, it is possible to find several studies with groups of people with stroke, older people with manual motor dysfunctions caused by aging, parkinsonians, children with developmental psychomotor disabilities, including cerebral palsy, Down syndrome, and autism. Research with LMC points to its potential use by people with difficulties in fine and gross motor skills, explicitly concerning pincer grasp and power grip strength movements, extension and flexion of fists and fingers, forearm supination and pronation. The trend is that these technologies are available in people’s homes, offering services in the most diverse areas of entertainment, education, and health. Gear VR is a more cost-effective solution because it uses the screen of a Samsung smartphone as a viewing display. Several models of VR headsets are on the market, such as Gear VR, Rift glasses, and HTC Vive. It has been currently being investigated as a technological resource to support upper limb motor rehabilitation interventions, as it allows capturing finer movements of the hands and fingers, which are essential for the rehabilitation of manual dysfunctions found in different conditions. LMC can be used in non-immersive mode, plugged into the computer via USB (desktop version), or attached to VR glasses (headset version) for immersive interaction. It is an interactive technology in Virtual Reality (VR) environments. It accurately detects all the hand and finger joints. The Leap Motion Controller (LMC) is a small, portable, relatively low-cost device compared with other motion capture devices such as Doctor Kinetic ®. *Address all correspondence to: Introduction Game Therapy and Virtual Reality Laboratory (Lab GameVR) Postgraduate Program in Developmental Disorders (Programa de Pós-Graduação em Distúrbios do Desenvolvimento ), Mackenzie Presbyterian University, São Paulo, Brazil.
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