Thread: Question about brain function

I was just wondering how the brain changes enzymes brought through the blood-stream into electrical pulses.

does the brain change enzymes in the blood stream into electric pulses?

It really doesn't ring a bell. Maybe you formulated something in a strange manner that I don't recognize what you are talking about, or are you just making it up?

can you reformulate?

sorry, i guess what i am really trying to ask is; how does our body create electrical pulses which our brain uses to relay information throughout the body.

Nerve cells (neurons) spend a lot of time and energy pumping ions (Na+, K+, Ca2+, Cl- etc) across the cell membrane. The result of all this pumping is that the membrane becomes polarised, in effect there is a slight +ve charge outside the cell and a slight -ve charge inside.

Signals pass from one neuron to another at specialised sites called synapses. Here one cell releases a neurotransmitter (such as acetylcholine), which diffuses the short distance to the next cell membrane where it binds specialised receptors. These receptors then open up ion channels which cause the cell membrane to depolarise. The depolarisation then passes in a wave along the neuron until it reaches a synapse with another cell, where it in turn releases neurotransmitters to allow the signal to carry on.

Think of it as electrochemical. More like a battery than a wind-turbine.