brainpy.dyn.channels.ICaT_RE
brainpy.dyn.channels.ICaT_RE#
- class brainpy.dyn.channels.ICaT_RE(size, T=36.0, T_base_p=5.0, T_base_q=3.0, g_max=1.75, V_sh=- 3.0, method='exp_auto', name=None)[source]#
The low-threshold T-type calcium current model in thalamic reticular nucleus.
The dynamics of the low-threshold T-type calcium current model 1 2 in thalamic reticular nucleus neurons is given by:
\[\begin{split}I_{CaT} &= g_{max} p^2 q(V-E_{Ca}) \\ {dp \over dt} &= {\phi_p \cdot (p_{\infty}-p)\over \tau_p} \\ &p_{\infty} = {1 \over 1+\exp [-(V+52-V_{sh}) / 7.4]} \\ &\tau_{p} = 3+{1 \over \exp [(V+27-V_{sh}) / 10]+\exp [-(V+102-V_{sh}) / 15]} \\ {dq \over dt} &= {\phi_q \cdot (q_{\infty}-q) \over \tau_q} \\ &q_{\infty} = {1 \over 1+\exp [(V+80-V_{sh}) / 5]} \\ & \tau_q = 85+ {1 \over \exp [(V+48-V_{sh}) / 4]+\exp [-(V+407-V_{sh}) / 50]}\end{split}\]where \(phi_p = 5^{\frac{T-24}{10}}\) and \(phi_q = 3^{\frac{T-24}{10}}\) are temperature-dependent factors (\(T\) is the temperature in Celsius), \(E_{Ca}\) is the reversal potential of Calcium channel.
- Parameters
References
- 1
Avanzini, G., et al. “Intrinsic properties of nucleus reticularis thalami neurones of the rat studied in vitro.” The Journal of Physiology 416.1 (1989): 111-122.
- 2
Bal, Thierry, and DAVID A. McCORMICK. “Mechanisms of oscillatory activity in guinea‐pig nucleus reticularis thalami in vitro: a mammalian pacemaker.” The Journal of Physiology 468.1 (1993): 669-691.
- __init__(size, T=36.0, T_base_p=5.0, T_base_q=3.0, g_max=1.75, V_sh=- 3.0, method='exp_auto', name=None)[source]#
Methods
__init__
(size[, T, T_base_p, T_base_q, ...])current
(V, C_Ca, E_Ca)dp
(p, t, V)dq
(q, t, V)get_delay_data
(name, delay_step, *indices)Get delay data according to the provided delay steps.
ints
([method])Collect all integrators in this node and the children nodes.
load_states
(filename[, verbose])Load the model states.
nodes
([method, level, include_self])Collect all children nodes.
register_delay
(name, delay_step, delay_target)Register delay variable.
register_implicit_nodes
(nodes)register_implicit_vars
(variables)reset
(V, C_Ca, E_Ca)Reset function which reset the whole variables in the model.
reset_delay
(name, delay_target)Reset the delay variable.
save_states
(filename[, variables])Save the model states.
train_vars
([method, level, include_self])The shortcut for retrieving all trainable variables.
unique_name
([name, type_])Get the unique name for this object.
update
(t, dt, V, C_Ca, E_Ca)The function to specify the updating rule.
update_delay
(name, delay_data)Update the delay according to the delay data.
vars
([method, level, include_self])Collect all variables in this node and the children nodes.
Attributes
global_delay_vars
name
steps