Comments for Vertebrate Physiology

Comment on Snuggling with schnookums…brains in love by Janie

Janie — Sat, 04 Jul 2009 21:44:58 +0000

So do people who have Parkinson’s have difficulty falling in love? Also, I guess they would have trouble orgasming as well, right? http://scienceblogs.com/cortex/2008/02/dopamine_and_orgasm.php

Comment on Woman sees ‘third arm’ after stroke by Anonymous

Anonymous — Sun, 28 Jun 2009 19:40:45 +0000

Does this mean that the stroke affected her right LGN and the somato-sensory cortex?

Comment on Sleep, perchance to dream by Di

Di — Tue, 14 Oct 2008 16:54:35 +0000

That is a really cute kitty… that is so beautiful lol

Comment on Pay attention… by Anonymous

Anonymous — Mon, 11 Feb 2008 22:13:41 +0000

I agree with anonymous, this is tyte!

Comment on Welcome by Chopsticks

Chopsticks — Fri, 01 Feb 2008 17:01:03 +0000

Why scratching brings relief

Comment on Pay attention… by Anonymous

Anonymous — Wed, 30 Jan 2008 07:37:16 +0000

This is awesome

Comment on Reversal potential confusion by moon

moon — Wed, 18 Jul 2007 11:03:59 +0000

You are focusing at just the reversal potential, think about what is happening at potentials above and below the reversal potential.
For example, in the case of a muscle membrane, below the reversal potential there is a net current *into* the cell. (in this case, more sodium flowing in than potassium flowing out) At the reversal potential, there is no net currennt and the amount of sodium flowing in equals the amount of potassium flowing out. Above the reversal potential, there is more potassium flowing out than sodium flowing in, so there is a net current out of the cell.
Below: current IN
At: no current
Above: current OUT

Comment on Reversal potential confusion by Farhad

Farhad — Wed, 18 Jul 2007 04:28:05 +0000

As far as the current reversing after it reaches an equilibrium of 0. What does this exactly mean?
I understand that at a certain point the ions going in equals the ions going out. But why does this result in the current reversing, especially when their charges are the same. What does this mean in all aspects on the atomic or molecular level (or at what level do we need to understand this)?

Comment on Drug actions on channels by moon

moon — Sat, 14 Jul 2007 23:25:24 +0000

Yes, this is another factor that we /might/ get to in the coming weeks. Basically, some drugs act at the *same* site as the endogenous neurotransmitter, and others work at allosteric (other) sites on the receptor. But this is not really a course on drug actions and the brain (there actually IS a course at UT BIO365W that covers this).
In short, we will look at drug actions in terms of what they tell us about the properties of receptors and neurons.

Comment on Drug actions on channels by Anonymous

Anonymous — Sat, 14 Jul 2007 23:17:19 +0000

But what about the way in which these drugs bind to channels, you said something about adding to the effect if GABA was there or the drug working if GABA wasn’t there?