Search found 36 matches

by shwetakgp
Tue Jul 16, 2013 4:26 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

dear ted,
i still dont have a clue about how to make the cell without the length of dendrites . and i still cnt find it!!!!
by shwetakgp
Mon Jul 15, 2013 3:59 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

and for the stimulus this is what happens. after a spike is achieved nothing happens to its peak voltage for some values of amplitude, when i change the values of amplitude further the spike peak starts dipping i.e peak voltage starts dipping.... then on furthur increasing the amplitude the peak goe...
by shwetakgp
Mon Jul 15, 2013 2:26 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

i wanted to create a cell from shaesbyfohlmeister 1999 by GUI.I am facing few problems 1) They have not mentioned the length and diameter of any of the dendritic subtrees!! 2) in some cells values are like 36 subtrees for one dendrite,18 for other and 2 or 3 for other. its getting crowded!!! and the...
by shwetakgp
Mon Jul 15, 2013 3:33 am
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

dear ted, i was able to simualte a pulse train by vector clsaa's play method .It shows a spike with the potential reaching 20 to 30 but but the problem is that before showing a spike it first decreases from resting potential to -90 something. Is there something wrong? i read your mail about using ne...
by shwetakgp
Mon Jul 15, 2013 1:03 am
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

for the disc elecrode you saw my model , my soma and axon are collinear to the point electrode.So how should i do it?. Do you mean to say that atleast one section should not be in a parllel plane. actually i have to do the simulation just like the experiment is going to be performed and a disc elect...
by shwetakgp
Sun Jul 14, 2013 5:24 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

dear ted, i sent an email about my problem but i have got it now so i aplogise for sending that mail. I wanted to know that i created subtrees of a dendrite using both hoc code and gui but when i see my shape plot, dendrites are shown by straight lines but in some other files that i saw like sheasby...
by shwetakgp
Sat Jul 13, 2013 4:02 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

can anybody suggest me where can i find the morphology any primate retinal ganglion cell? like diameter of soma, number of dendrites etc..
nd i also wanted to know that when we create a soma or axon in cell through cell builder is that mylinated?
by shwetakgp
Fri Jul 12, 2013 4:13 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

To make a disc electrode i thought that i should start with a point and take a current density sigma. taking the point, i can assume a disc of radius r. for calculating the current i could integrate it taking a ring of thickness dr as the element of integration. Then multiplying the area found by th...
by shwetakgp
Fri Jul 12, 2013 3:53 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

thanks ted ,
i got the stimulus with 5 pulses with a simple vector class's play method.
by shwetakgp
Fri Jul 12, 2013 2:05 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

thanks ted,
correct me if i am wrong .finitializeHandler controls initi() which which initalizes seti() at START and seti() sets the time course of the current through and its waveform
by shwetakgp
Wed Jul 10, 2013 5:27 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

i tried with the vector play method but i cnt figure out what should be after the value of stim_time after this stim_time.x[6]=$1+$2+1. i cnt understand why 1 has been added in this statement. I tried simply by del+dur+dur but it when i run it the window disappears and i cnt understand the use of fi...
by shwetakgp
Mon Jul 08, 2013 4:36 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

thanks ted now it is working fine. could you answer the aobve queries if you find time..
by shwetakgp
Mon Jul 08, 2013 2:48 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

thank you ted for your reply i want the channels i created through cell builder to be used. should i disable hh and pas mechanisms for axon and soma?
by shwetakgp
Mon Jul 08, 2013 12:48 pm
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

my model is working properly but at t= 10, if i make the amplitude of extrenal stimulation pulse= 0,It still shows an action potential how could i incorporate an electrode with cylindrical dimensions? how can i make a biphasic multipulse waveform? i was thinking that maybe i could add more vectors l...
by shwetakgp
Mon Jul 08, 2013 3:51 am
Forum: Other questions
Topic: graphs in extracelllular stimulation
Replies: 47
Views: 13410

Re: graphs in extracelllular stimulation

dear ted, i am really sorry but i mailed you that file days before and i made a lot of changes after that.I am sending you the final file now. please check it if you will find it okey then i will show it to my supervisor so it would be a big favour if you give it a look. once again apologies for the...