Modeling Gap Rectifying Junction
Posted: Tue Sep 28, 2010 1:39 pm
Please could you explain to me the difference between the Gap.mod modeled in NEURON Book listing 10.2 and that modeled in the on-line course under "linear circuits, rectifying junction"
The PARAMETER and BREAKPOINT sections of both mod files are different. Please could you explain the reason for these differences?
In building the Linear circuit in the 0n-line course under the "linear circuit rectifying junction", the Gap-junction was built using the channel builder as a density mechnasim, though you explain the reason was to make it possible for the file to be ran on-line in all machines. The question then is why was the Gap built as a density Mechanism and not as a point process which can also be built using channel builder?
I was able to reproduce the "linear cicuits, rectifying junction" in the on-line course without error.
Rather than using the rGap.ses, I tried to reproduce the linear circuit rectifying juction, using the Gap.mod file of listing 10.2. in two different ways
In the first approach, I created the "left and Right sections" using cell builder, and saved each section as a separate hoc file (called right and left sections .hoc each)
I wrote the hoc code for the instrumentation for inserting the Gap as in section 10.1.2.1 (usage), without the "creating a & b and their segements" but starting with "objeref" replacing a & b with right and left.
I wrote the initalization hoc code that opens the hoc file of the two sections created in cell builder, and the instrumentation.hoc file, I have this error message;
point process not located in a section
in Instrument_Gap.hoc near line 7
}
^
xopen("Instrument_Gap.hoc" )
execute1("{xopen("Instrument_Gap.hoc")}" )
load_file("Instrument_Gap.hoc" )
0
nrniv: Segmentation violation
in Instrument_Gap.hoc near line 9
Right g[0].loc(0.0001)
The second method was to repeat what you have under section 10.1.2.1 (Usage) of the NEURON book, only changing a & b to dend[0], dend[1]. I have a similar error message:
point process not located in a section
in /cygdrive/C/Documents and Settings/_Irene_/Desktop/NEURON_Modeling/NEURON_BOOK/Chapter_Ten/Model_Gap_Junction.hoc near line 16
}
^
Please could you explain these error messages and how to fix them.
Thank you
Irene
The PARAMETER and BREAKPOINT sections of both mod files are different. Please could you explain the reason for these differences?
In building the Linear circuit in the 0n-line course under the "linear circuit rectifying junction", the Gap-junction was built using the channel builder as a density mechnasim, though you explain the reason was to make it possible for the file to be ran on-line in all machines. The question then is why was the Gap built as a density Mechanism and not as a point process which can also be built using channel builder?
I was able to reproduce the "linear cicuits, rectifying junction" in the on-line course without error.
Rather than using the rGap.ses, I tried to reproduce the linear circuit rectifying juction, using the Gap.mod file of listing 10.2. in two different ways
In the first approach, I created the "left and Right sections" using cell builder, and saved each section as a separate hoc file (called right and left sections .hoc each)
I wrote the hoc code for the instrumentation for inserting the Gap as in section 10.1.2.1 (usage), without the "creating a & b and their segements" but starting with "objeref" replacing a & b with right and left.
I wrote the initalization hoc code that opens the hoc file of the two sections created in cell builder, and the instrumentation.hoc file, I have this error message;
point process not located in a section
in Instrument_Gap.hoc near line 7
}
^
xopen("Instrument_Gap.hoc" )
execute1("{xopen("Instrument_Gap.hoc")}" )
load_file("Instrument_Gap.hoc" )
0
nrniv: Segmentation violation
in Instrument_Gap.hoc near line 9
Right g[0].loc(0.0001)
The second method was to repeat what you have under section 10.1.2.1 (Usage) of the NEURON book, only changing a & b to dend[0], dend[1]. I have a similar error message:
point process not located in a section
in /cygdrive/C/Documents and Settings/_Irene_/Desktop/NEURON_Modeling/NEURON_BOOK/Chapter_Ten/Model_Gap_Junction.hoc near line 16
}
^
Please could you explain these error messages and how to fix them.
Thank you
Irene