INDEPENDENT {t FROM 0 TO 1 WITH 1 (ms)}
NEURON {
POINT_PROCESS sinstim
RANGE del, dur, amp, baseamp, i, freq
NONSPECIFIC_CURRENT i
}
UNITS {
(nA) = (nanoamp)
PI = (pi) (1)
}
PARAMETER {
freq = 5 (Hz)
del = 0 (ms)
dur = 1e10 (ms)
amp = 0 (nA)
baseamp = 0 (nA)
}
ASSIGNED { i (nA) }
BREAKPOINT {
if (t>del && t<dur+del) {
i = -baseamp - sin(2*PI*freq*(t-del)/1000.)*amp
} else {
i = 0.0
}
}