Glossary D

Glossary D

Duplex theory of texture perception refers to the idea that texture perception is determined by both spatial and temporal cues that are detected by two (2) types of receptors . Duplex theory of texture perception is originally proposed by David Katz and named the "Duplex Theory" by Hollins.

Dura mater literally means "tough mother" that refers to a dense, inelastic, double- layered, vascularized membrane of the meninges that adheres to the inner surface of the skull.

Durable medical equipment refers to equipment such as wheelchairs, hospital beds and prosthetics used at home generally by disabled persons. Durable Medical Equipment is also called Home medical equipment.

Durable power of attorney refers to a document that authorizes someone to act on behalf of a person in financial and property matters and health care decisions that can go into effect either when the agreement is signed or when a disability occurs

Durable powers of attorney in health care matters refers to a form of advance directives through which an individual can authorize another individual to make decisions and take actions on his or her behalf under specific circumstances. Durable powers of attorney in health care matters applies , particularly to issues involving health care; continues in force until or unless revoked by its maker even when the individual who authorized it is no longer able to act as a competent decision maker. Durable powers of attorney in health care matters is sometimes called a "Health care proxy".

Duration refers to the length of time that an individual repeatedly or continuously performs a certain behavior.

Duration method is a term in Behavioral observation which refers to a technique for converting observations into numerical scores that involves recording how much time an individual spends engaged in a specific behavior during a fixed-time observation period.

Durham rule refers to a standard for judging legal insanity which holds that an accused is not criminally responsible if his unlawful act was the product of mental disease or mental defect.