Glossary I

Ionotropic receptors refer to receptors that are coupled to ion channels and affect the neuron by causing those channels to open

Ipsalateral refers to the arrangement in the nervous system in which one half of the brain controls the same side of the body.
Ipsilateral means on the same side; located on the same side of the body (left or right)

Ipsilateral connections refers to the nervous system connections between each hemisphere of the brain and the same side of the body. The primary connections in the nervous system are Contralateral . Please see also Contralateral connections .
Ipsilateral eye refers to the eye on the same side of the head as the structure to which the eye sends inputs.
IQ is the abbreviation for Intelligence Quotient which is an attempt to measure the intelligence of a person. The IQ score is usually based upon the results of a written test . To calculate the IQ, the person's mental age (as determined by a test) is divided by their chronologic age and the result is multiplied by 100.
Iris the circular muscle that controls the amount of light entering the eye.

Iron law of oligarchy refers to Robert Michels’s principle of political and social control which predicts that in any group where power is concentrated in the hands of a few individuals (an oligarchy), these individuals will tend to act in ways that protect and enhance their power.

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