an emotional response that has been acquired by conditioning

an acquired response that is under the control of (conditional on the occurrence of) a stimulus

an acquired response that is under the control of (conditional on the occurrence of) a stimulus

an acquired response that is under the control of (conditional on the occurrence of) a stimulus

an acquired response that is under the control of (conditional on the occurrence of) a stimulus

a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action

a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action

a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action

a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action

a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action