title: Interrupted reflection fibre optic communication device for the severely disabled.
abstract: The difference between light reflected from the open eye and that reflected from the closed lid is detected by means of an optic fibre attached to a spectacle frame. That difference is processed electronically to produce a pulse train which may be interpreted either subjectively by a 'listener', or physically for the purpose of controlling external devices. Involuntary blinks may be suppressed. Potential developments of the technique are discussed.
mesh_terms: D001698:Biomedical Engineering / Q000295:instrumentation; D003143:Communication Devices for People with Disabilities; D005336:Fiber Optic Technology; D006801:Humans; D012656:Self-Help Devices