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age 65
visits member for 2 years, 7 months
seen Aug 1 '12 at 4:54

I have a PhD in physics, but for my career, I worked as a software engineer. In my retirement, I have gone back to my first love, Physics. I attend lots of physics colloquia, seminars, conferences and summer schools mostly in astrophysics, cosmology and particle physics.


Feb
16
awarded  Supporter
Jan
31
awarded  Scholar
Jan
31
comment How does an inhibitory synapse communicate to the cell body of a neuron?
I wish I could "accept" both your answer and yamad's answer ;-). Thanks again for a great answer...
Jan
31
accepted How does an inhibitory synapse communicate to the cell body of a neuron?
Jan
30
comment How does an inhibitory synapse communicate to the cell body of a neuron?
I had read about EPSPs and IPSPs before and I now see that the main difference is the sign of the delta voltage change - thanks. My question still remains about how these travel down to the cell body down the dendrite tree. These are not action potentials and I thought action potentials were required for signals to travel unchanged over any distance. Do these EPSPs and IPSPs travel unchanged down the dendrite tree to the cell body to get "summed"? The membrane potential near the synapse changes but how does that change travel down the dendrite? The dendrite is not an electrical conductor.
Jan
30
awarded  Student
Jan
30
asked How does an inhibitory synapse communicate to the cell body of a neuron?