Tactile defensiveness: Abnormal sensitivity to touch.

Tailor sitting (Indian style): Sitting cross-legged on the floor.

TDD: Telecommunications Device for the Deaf.

Thalamus: A portion of the brain involved in receiving stimuli from other parts of the body or brain and transmittting them to
specialized areas of the brain.

Therapeutic Electrical Stimulation (TES): A treatment in which electrodes are attached to the skin over certain muscles while the person sleeps. The electric stimulations increases muscle bulk and strength. Its effects on improving funtion are
controversial.

Therapeutic Hoseback Ridding: See Hippotherapy

Therapeutic Services: Interventions to assist in the prevention or treatment of disease.

Therapist: A trained professional who works to overcome the effects of problems.

Thyroxin: A hormone form the thyroid gland that is important for thereglation of metabolism; it can be derived from animals
or made sysnthically.

Tomatis mehtod: A type of auditory integration training in which the child listens to special sound stimulation tapes and also
to his own voice.

Tone: The amount of muscle contraction when it is at rest. Too high, it is called spasticity; too low, hypotnia. Both interfere
with movement.

Tongue protrusion reflex: A reflex that causes the tongue to forcefully push food out of the mouth.

Tonic: Having continuous increased muscle tone.

Tonic-clonic (grand mal) seizure: A type of seizure which causes a sudden loss of consciousness followed immediately
by a generalized convulsion in which extremities become stiff, then jerk rhythmically. Formerly know as grand mal
seizure.

Trachea: Windpipe.

Tympanometer: An electrical instrument which measures changes in pressure and mobility of the eardrum to detect middle ear fluid.