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65 lines
1.3 KiB
65 lines
1.3 KiB
TITLE Gly synapse |
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COMMENT |
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MODIFIED to be a faster GLY synapse, taken from GABA synapse |
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Paul B. Manis - 7 Feb 2000 |
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simple alpha-synapse that generates a single PSP |
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********************************************* |
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reference: McCormick, Wang & Huguenard (1993) |
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Cerebral Cortex 3(5), 387-398 |
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found in: cat reticular nucleus of thalamus |
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********************************************* |
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Assembled for MyFirstNEURON by Arthur Houweling |
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ENDCOMMENT |
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INDEPENDENT {t FROM 0 TO 1 WITH 1 (ms)} |
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NEURON { |
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POINT_PROCESS GlySynapse |
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USEION cl READ ecl VALENCE 1 |
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: negative valence not accepted by nrnivmodl |
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RANGE onset, gmaxIPSP, e, g, i, w |
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NONSPECIFIC_CURRENT i |
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} |
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UNITS { |
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(nA) = (nanoamp) |
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(mV) = (millivolt) |
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(nS) = (nanomho) |
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} |
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PARAMETER { |
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onset= 25 (ms) |
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gmaxIPSP= 0 (nS) |
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w= 1 : weight factor for gmaxIPSP |
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ecl (mV) |
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v (mV) |
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celsius (degC) |
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} |
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ASSIGNED { |
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i (nA) |
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g (nS) |
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tadj |
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} |
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UNITSOFF |
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INITIAL { |
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tadj = 3^((celsius-23.5)/10) |
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} |
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BREAKPOINT { LOCAL tt |
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tt= (t-onset)*tadj |
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if ((t>onset)&&(tt<740)) { |
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: the exp() function does not accept arguments smaller than -745 |
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g = w*gmaxIPSP * exp(-tt/15) * (1-exp(-tt/0.5))/0.84 |
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} |
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else {g = 0} |
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: -ecl because negative valences can not be specified |
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i = g * (v-(-ecl)) |
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} |
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UNITSON |
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