Glossary A

Antagonist drugs refer to drugs that block or change the effects of an addictive drug, reducing the desire for the drug. Moreover, Antagonist drugs are medication that blocks or counteracts the effects of a psychoactive drug.

Antagonistic muscles are pairs of muscles that move a limb in opposite directions (examples are extensor and flexor )

Antecedent means prior information in discourse. In behavior Modification, Antecedents are events that typically precede a target response.

Antecedent conditions refer to stimulus conditions, or conditions that lead up to the behavior of interest.

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Antecedents stimulus refers to events that precede a behavior, thought, or feeling and make it likely to occur

Anterior is defined as toward the front.

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Anterior attention system refers to an attentional system of the brain mediating the voluntary control of attention that is supported by the frontal and medial cortices of the brain.

Anterior cerebral artery results from half of the division of an internal carotid artery, it supplies the anterior medial portion of its corresponding cerebral hemisphere.

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