If he fell into a field that blocked telepathic impulses as Pucky had earlier, then the situation would be critical.

In addition, beta blockers reduce Sympathetic Nervous System activity by blocking Sympathetic impulses.

The maze procedure involves creating scar tissue that blocks excess electrical impulses from traveling through your heart.

The clinical manifestations of tetanus are caused when tetanus toxin blocks inhibitory impulses, by interfering with the release of neurotransmitters, including glycine and gamma-aminobutyric acid.

Then, an electrical signal blocks erratic impulses that trigger tremors and other symptoms.

The genus is named after Cerberus because all its parts are poisonous : they contain cerberin, a cardiac glycoside, a substance that blocks electric impulses in the body (including the beating of the heart).

The exact mechanism of action in parkinsonian syndromes is not precisely understood, but it is known that trihexyphenidyl blocks efferent impulses in parasympathetically innervated structures like smooth muscles (spasmolytic activity), salivary glands, and eyes (mydriasis).

Due primarily to its longer refractory period, the AV node exerts a protective effect on heart rate by blocking atrial impulses in excess of about 180 beats/minute, for the example of a resting heart rate.