I am asking what the electrical impulses are.
That is completely wrong. First, it is only positive ions that are being moved about, most notably potassium and sodium. This is not the movement of electrons through a conductor.
Wrong. Apparently you have misconceptions of what electric current is.
http://en.wikipedia.org/wiki/Electric_current
"An
electric current is a flow of
electric charge... A flow of positive charges gives the same
electric current, and has the same effect in a circuit, as an equal flow of negative charges in the opposite direction. Since current can be the flow of either positive or negative charges, or both,"
And if you knew anything at all you would know that it is not electrons or ions by themselves that matter, but they are moving in relation to other charges. A wire is not made up of just electrons, the free electrons
drift in relation to the positive protons. Yet the EM force moves along the wire at the speed of c. it is NOT electrons or positive ions that are the electrical current, it is the EM fields that travel along the wire at the speed of c that is what you seek. You are confused as to what electrical current really is. It is the movement of any charge in relation to any other charge, be they positive or negative. This movement causes the EM current that does the actual work and carries the actual energy. Thos ions or electrons are not carrying anything.
Neuron - Wikipedia, the free encyclopedia
"A
neuron also known as a
neurone or
nerve cell) is an
electrically excitable
cell that processes and transmits information through electrical and chemical signals."
"All neurons are electrically excitable, maintaining
voltage gradients across their
membranes by means of metabolically driven
ion pumps, which combine with
ion channels embedded in the membrane to generate intracellular-versus-extracellular concentration differences of
ions such as
sodium,
potassium,
chloride, and
calcium. Changes in the cross-membrane voltage can alter the function of
voltage-dependent ion channels. If the voltage changes by a large enough amount, an all-or-none electrochemical pulse called an
action potential is generated, which travels rapidly along the cell's axon, and activates synaptic connections with other cells when it arrives."
First you need to grasp what an ion is:
Ion - Wikipedia, the free encyclopedia
"An
ion is an
atom or
molecule in which the total number of
electrons is not equal to the total number of
protons, giving the atom a net positive or negative
electrical charge."
Electric charge - Wikipedia, the free encyclopedia
"Electric charge is the
physical property of
matter that causes it to experience a
force when close to other electrically charged matter."
That's what makes them all move in the same general direction, two positive ions by themselves would repel in opposite directions, without a negative, as electrons in a wire would go nowhere without positive protons nearby to move against.
Second, the brain is not directly controlling ions. Axons use a combination of salt pumps and gates to produce an action potential. The pumps move positive ions to the outside of the axon, and the gates react to force (as is the case with eletrical shock) or to neurotransmitters. This is not an electrical current. This is the diffusion of positive ions down a concentration gradient.
Only because you refuse to accept how each of those works.
Action potential - Wikipedia, the free encyclopedia
"n
physiology, an
action potential is a short-lasting event in which the electrical
membrane potential of a
cell rapidly rises and falls, following a consistent trajectory."
Voltage-gated ion channel - Wikipedia, the free encyclopedia
"
Voltage-gated ion channels are a class of
transmembrane ion channels that are activated by changes in electrical
potential difference near the channel; these types of ion channels are especially critical in
neurons, but are common in many types of
cells."
Ion transporter - Wikipedia, the free encyclopedia
"In biology, an
ion transporter, also called an
ion pump, is a
transmembrane protein that moves ions across a
plasma membrane against their
concentration gradient, in contrast to
ion channels, where ions go through
passive transport. These primary transporters are enzymes that convert energy from various sources, including ATP, sunlight, and other redox reactions, to potential energy stored in an electrochemical gradient. This energy is then used by secondary transporters, including ion carriers and ion channels, to drive vital cellular processes, such as ATP synthesis."
Na+/K+-ATPase - Wikipedia, the free encyclopedia
A wave of salt water containing dissolved ions is not an electrical current.
Because if you knew anything about waves you would know that thought does not even apply here, as particles in waves merely all move up and down together. They do not move in a current from a starting voltage to an ending voltage. Nor does a river flow from a starting voltage to an ending voltage, merely follows the terrain. Voltage does not matter what the gravitational force is. You do not have to place your coffee pot below the plug-in for it to work. Nor does standing on your head affect how your brain or muscles works except for the pooling of blood. Nor does one even need gravity, as they work just as well in space.
The voltage refers to the difference in charge between the outside and the inside of the axon. This difference is charge is equalized by diffusion, not the transfer of electrons.
It is this difference in voltage that releases the ions, mere diffusion would not create a current flow in one direction, unless there was a reason they were all non-diffused to begin with and then reset. By electrical charge attracting or repelling them. What happens when these ions reach the receptor?
This is very different from the electrical charge on the paddles of a defibrillator where there is a flow of electrons through conductors. It is actually not the electricity itself that causes all of the nerves to fire. It is the physical force caused by the shock that causes the ion gates to open. If you lack an electrical defibrillator you can actually use direct physical manipulation to attain the same results.
Again you try to seperate one from the other. Your heartbeat is controlled by your sub-conscious mind, not itself.
Heart - Wikipedia, the free encyclopedia
"he heart is effectively a
syncytium, a meshwork of cardiac muscle cells interconnected by contiguous cytoplasmic bridges. This relates to electrical stimulation of one cell spreading to neighboring cells.
Some cardiac cells are self-excitable, contracting without any signal from the nervous system, even if removed from the heart and placed in culture. Each of these cells have their own intrinsic contraction rhythm. A region of the human heart called the
sinoatrial (SA) node, or pacemaker, sets the rate and timing at which all cardiac muscle cells contract. The SA node generates electrical impulses, much like those produced by nerve cells."
Autonomic nervous system - Wikipedia, the free encyclopedia
"he
autonomic nervous system (
ANS or
visceral nervous system or
involuntary nervous system) is the part of the
peripheral nervous system that acts as a
control system, functioning largely below the level of
consciousness, and controls
visceral functions.
[1] The ANS affects
heart rate,
digestion,
respiratory rate,
salivation,
perspiration,
pupillary dilation,
micturition (urination), and
sexual arousal. Most autonomous functions are involuntary but a number of ANS actions can work alongside some degree of
conscious control. Everyday examples include breathing, swallowing, and sexual arousal, and
in some cases functions such as
heart rate."
But you want to ignore all that don't you. The heart would not beat without the control of the brain except for a few cells that soon stop without a functioning brain.
I happen to think that the differences between electricity in a wire and nerve impulses are worth pointing out. Nerves are not wires conducting electricity. Your brain is not controlling ions at a distance.
I think the simularities are worth pointing out. And your brain is controlling them. It sends them from one neuron to the next along specific pathways to complete thoughts. Or below your conscious knowledge to keep your heart beating, your lungs working. To enable you to walk without thinking about it. And they know exactly where to send them.
Nervous system - Wikipedia, the free encyclopedia
"At the cellular level, the nervous system is defined by the presence of a special type of cell, called the
neuron, also known as a "nerve cell". Neurons have special structures that allow them to send signals rapidly and precisely to other cells."
And yes, nerves are just like wires conducting electricity.
"They send these signals in the form of electrochemical waves traveling along thin fibers called
axons, which cause chemicals called
neurotransmitters to be released at junctions called
synapses."
Nerve - Wikipedia, the free encyclopedia
" A
nerve is an enclosed, cable-like bundle of
axons (the long, slender projections of
neurons) in the
peripheral nervous system. A nerve provides a common pathway for the
electrochemical nerve impulses that are transmitted along each of the axons to peripheral organs."
Further reading:
Electrochemistry - Wikipedia, the free encyclopedia
And dealing with the body you deal with chemistry, which is the study of atoms:
Chemistry - Wikipedia, the free encyclopedia
And atoms are controlled by the electrical force, and none other.