Glossary E

Epigenesis is defined as the emergence of new structures and functions during the course of development.

Epigenetic principle refers to a biological plan for growth such that each function emerges in a systematic sequence until the fully functioning organism has developed. In Erikson’s theory, it is the idea that each psychosocial strength has its own special period of particular importance, the the notion that development is guided by an underlying plan in which certain issues have their own particular times of importance. (See Erikson's Psychosocial theory)

- Epigenetic principle of maturation : Epigenetic principle of maturation refers to the idea that human development is governed by a sequence of stages that depend on genetic or hereditary factors.

Epigenetics refers to the study of potentially inheritable changes in gene expression that are caused by environmental factors that do not alter a cell"s DNA.

Epigone refers to a second-rate imitator or follower, especially of an artist or a philosopher.

Epilepsy refers to a neurological condition that involves recurring bodily seizures with associated changes in EEG patterns.

Epileptic syndrome refers to a syndrome characterized by repeated seizures which is more serious than a single seizure.

Epileptogenic focus refers to the anatomic site of onset.