A Critical Event That Advanced the Scientific Study of Sleep

question 301

True/False

A critical event that advanced the scientific study of sleep was the invention of the electroencephalo graph by a German psychiatrist named Hans Berger.

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Definitions:

Ectoderm

Cells of the inner cell mass of the embryo that develop into the outer surface of the skin, the nails, part of the teeth, the lens of the eye, the inner ear, and the central nervous system.

Embryonic Period

The period that extends from the time the organism becomes attached to the uterus until the end of the 8th week of pregnancy, when all the major organs have taken primitive shape.

Cell's Environment

The surrounding conditions and factors that interact with and influence a cell's function and survival.

Genes

The segments on a DNA molecule that act as hereditary blueprints for the organism’s development.