An action potential represents a change in electrical potential from the resting potential of the neuronal cell membrane, and is a series of electrical and underlying chemical changes that travel down the length of a neural cell (neuron). The neural...

A stereotyped change in electrical potential across the MEMBRANE of a neuron or muscle cell as a result of stimulation. The occurrence of an action potential is dependent on the cell being depolarized (see DEPOLARIZATION) past the point called the...

A nerve impulse is a message which is transmitted along a nerve fiber or axon. It originates in the neuron's soma, or cell body, passes into the axon hillock, and then speeds down along the axon until it reaches the axon terminal or synaptic knobs. The...

An action potential is how neurons—or nerve cells—communicate. Neurons consist of four basic parts: the body (soma), dendrites, axon, and synaptic endings. Surrounding the body of each neuron is a semipermeable membrane which separates...

An action potential is a "spike" of positive and negative ionic discharge that travels along the membrane of a cell. Action potentials are an essential feature of animal life, rapidly carrying information within and between tissues. They also occur in...

I. INTRODUCTION The Krafts1 have farmed for generations in the black soil of America's heartland. Matthew Kraft and his father and grandfather before him have grown organic corn on their 300-acre family farm in LaPorte City, Iowa. Farming has been their livelihood, producing...

ABSTRACT Large and rapid changes in light scattering accompany secretion from nerve terminals of the mammalian neurohypophysis (posterior pituitary). In the mouse, these intrinsic optical signals are intimately related to the arrival of the action potential E-wave and the release of arginine vasopressin...