Search found 49 matches

by ahmed.hamzah
Thu Dec 05, 2019 12:26 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Any one can help me to find the math behind extracellular mechanism please?
by ahmed.hamzah
Mon Dec 02, 2019 10:41 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Thank you for the help. Any one can write the math behind extracellular mechanism please?
by ahmed.hamzah
Wed Nov 13, 2019 2:24 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Thank you for help. Actually I used to use neuron with Hoc and .mod files. and I am trying to use your code, but it is not work, and I already installed neuron and Python. Is there a tutorial or video about using your code ?
by ahmed.hamzah
Fri Nov 08, 2019 4:06 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Dear adamjhn, you said "1.These changes to concentrations in the Frankenhaeuser–Hodgkin would not directly alter the membrane potential, but may influence the currents for mechanisms you choose to put in the axon, via the Nernst potentials." Can you tell me more about this mechanism please, and what...
by ahmed.hamzah
Thu Nov 07, 2019 11:49 am
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Thank you for replaying, and I am sorry I did not mean to be disturbing.
I do not know the new topic where can post it to post it again at rigth place.
by ahmed.hamzah
Wed Nov 06, 2019 2:01 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Thank you for answer. can you please answer those questions: 1-do I have add this the same tem to the potential equation and what do you expect the form of it. 2-Can you please write the same code with Neuron and not Python as file.hoc , because I did not installed Python. by this way I can your cod...
by ahmed.hamzah
Tue Nov 05, 2019 4:24 pm
Forum: Reaction-diffusion in NEURON
Topic: Tracking External and Internal Na & K concentration
Replies: 2
Views: 145

Tracking External and Internal Na & K concentration

Hi every one. I am trying to simulate axon with external and internal concentration included Na and K ions. The external space surrounded to FH space . The equilibrated of sodium and potassium from external to the bath governed by rate constant (0.09 ms and 0.05 ms). the governing equation of extern...
by ahmed.hamzah
Tue Nov 05, 2019 11:26 am
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

If I have the rate of sodium and potassium (0.05 ms and 0.09 ms ) how can I write the new term which is responsible to depletion of potassium and add that term to the diffusion equation.. is it: ((Kbath-Ko)/tau)*volume/area surface. volume is a whole external volume between axon and FH space surface...
by ahmed.hamzah
Tue Oct 22, 2019 5:09 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Thank you for the suggestion, I will do research to find them.
by ahmed.hamzah
Mon Oct 21, 2019 3:03 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

Re: The equilibrium between the FS and external

Thank you for replying. Yes I referred the same reference you mentioned, and I don't have the Authers email. The variable rate constant is not clear in the paper, so I am trying to ask anyone can help me.
Anyone could help me please?
by ahmed.hamzah
Sun Oct 20, 2019 8:42 pm
Forum: Reaction-diffusion in NEURON
Topic: The equilibrium between the FS and external
Replies: 20
Views: 723

The equilibrium between the FS and external

I am trying to simulate same example of extercellular in this paper"Computational Modeling of Three-Dimensional Electrodiffusion in Biological Systems: Application to the Node of Ranvier". The authors validated them work comparing to 1D Neuron including extracellular and intercellular. The authors u...
by ahmed.hamzah
Wed Sep 12, 2018 11:58 am
Forum: Reaction-diffusion in NEURON
Topic: Add term to RxD solution.
Replies: 2
Views: 2037

Re: Add term to RxD solution.

Can anyone help me please ? is there answer to my question ?
by ahmed.hamzah
Fri Sep 07, 2018 5:43 pm
Forum: Reaction-diffusion in NEURON
Topic: Add term to RxD solution.
Replies: 2
Views: 2037

Add term to RxD solution.

Hi everyone I am working in RxD to find Na and k concentration inside axon, I know that RxD equation consists many terms: \[\frac{\partial u}{\partial t} = d \nabla^2 u + f(u, t)\] but I would like to add a new term to the right side, I know that the first term on the left side of the equation above...
by ahmed.hamzah
Fri Aug 31, 2018 2:55 pm
Forum: NEURON + Python
Topic: Error in bash.exe
Replies: 1
Views: 1713

Error in bash.exe

Hi everyone,
I got this error when I executed nrngui
'bash' is not recognized as an internal or external command
can anyone help me in this problem ?
Thanks in advance.