Assistive Technology Professional (ATP) 2025 – 400 Free Practice Questions to Pass the Exam

The correct answer relates to the specific function and design of the switch being worn on the forehead. A switch worn on the forehead relies on muscle movements to activate it. This means that when a person makes minimal movements, such as raising their eyebrows or tilting their head slightly, these muscle actions can trigger the switch.

This type of interface is particularly useful for individuals who may have limited mobility but can still control specific muscle groups. It emphasizes the ability to utilize available motility for communication or control, showcasing innovation in assistive technology.

Other options, such as voice recognition or battery power, might be relevant to some assistive devices, but they do not directly pertain to how a forehead-worn switch operates. A computer interface, while important for connectivity, is not the primary function of the switch itself but rather how it interacts with other devices. Thus, muscle movements are essential for the activation of this type of switch.