Glossary H

Glossary H

Hyperactivity refers to a term that describes a higher than normal level of activity. This may apply to behavior, and an organ can also be described as hyperactive if it is more active than usual.

Hyperacusis refers to excessive auditory sensitivity

Hyperarousal refers to a response to exposure to violence and trauma including low threshold for startle response, increases in heart rate, sleep disturbance, anxiety, and motor hyperactivity.

Hyperbaric chamber is chamber where the absolute pressure is increased above atmospheric pressure.

Hypercomplex (end-stopped) cell refers to a cell of the visual cortex that responds best to stimuli of a precisely limited type, anywhere in a large receptive field, with a strong inhibitory field at one end of its field

Hyperdensity is defined as increased density of brain tissue that typically signals an abnormal density such as seen in tumor or bleeding.

Hyperestrogenemia means having an excessive amount of estrogens in the blood.

Hypergelast refers to a person who laughs excessively. In contrast with the word Agelast which refers to someone who never laughs.