Assistive Technology Professional (ATP) Practice Test

A switch site is a location where a person can activate a switch to assist with communication or control of devices, and its ideal characteristics are crucial for effective use. The correct answer points to increased muscle tone as generally not being desirable for a switch site because high muscle tone can limit a person's ability to move and activate the switch smoothly and with intent. For an optimal switch site, controlled activation is preferred, as it allows for reliable and precise control over the switch. Small movement is also advantageous since it can accommodate users who may have limited range of motion but can still activate a switch with minimal effort. Lastly, isolated movement is beneficial, as it ensures that the activation of the switch does not involve involuntary movements from surrounding muscle groups that could cause unintended activations. Therefore, increased muscle tone hinders the effectiveness of the switch site, making it less suitable for the controlled, precise activation required for effective communication or device use.