Post-coma persons with motor and communication/consciousness impairments choose among environmental stimuli and request stimulus repetitions via assistive technology.

The team worked with three adults who had come out of a coma. Each person had little speech and very limited movement.

The adults wore small sensors that caught eye blinks or hand closures. A blink or closure worked like a mouse click. The click let them pick a song, video, or vibration they liked. Another click asked to play it again.

All three people quickly learned to hit the switch to pick their favorite stimuli. Two clients used the switch almost every time. The third person used it less, but still far more than at baseline.

They also learned to hit a second switch pattern to ask for ‘more.’ Staff saw clear signs the clients enjoyed the control.

Robertson et al. (2013) took the same blink-switch idea and let two post-coma adults make phone calls. The 2010 study showed choice first; the 2013 study added social calls, proving the tech can grow with the client.

Perilli et al. (2012) used a similar microswitch computer for four adults with Alzheimer’s disease. Both papers show one tiny movement can open a big communication door, even with different diagnoses.

DeRoma et al. (2004) warned that room noise or lights can change microswitch pressing. Their mixed results remind you to keep the environment the same while you teach the skill.

If you serve adults who are locked-in after brain injury, eye-blink or hand-closure switches can give them a voice in just a few sessions. Start with one highly preferred song or clip. Let the client turn it on and ask for repeats. Once the response is steady, you can move to bigger choices like phone calls or environmental controls. The whole setup costs little and can be run by a single technician.