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MulticompartmentMCNNeuron

sc_neurocore_engine::neurons::multi_compartment

Struct MulticompartmentMCNNeuron 

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pub struct MulticompartmentMCNNeuron {
    pub u: f64,
    pub v_basal: f64,
    pub v_apical: f64,
    pub tau: f64,
    pub tau_b: f64,
    pub tau_a: f64,
    pub g_ratio: f64,
    pub beta: f64,
    pub v_th: f64,
    pub dt: f64,
}
Expand description

Multi-compartment neuron (MCN) matching the Spiking-WM architecture.

Dual-dendrite model with basal and apical compartments. The apical dendrite gates how strongly basal information influences the soma, enabling nonlinear integration for long-term temporal memory in RL tasks.

Exact equations from arXiv:2503.00713 (Spiking-WM, PNAS 2025):

τ_b dV_b/dt = -V_b + x_b (basal) τ_a dV_a/dt = -V_a + x_a (apical) τ dU/dt = -U + σ(V_a)·[g_B/g_L·(V_b - U) + W_s·I] (soma) S[t] = Θ(U[t] - V_th) (spike) U[t] ← U[t]·(1 - S[t]) (soft reset)

Default parameters from Table II: τ = τ_a = τ_b = 2.0, g_B/g_L = 1.0, β = 1.0 (sigmoid steepness), V_th = 1.0.

Reference: Brain-Cog-Lab, arXiv:2503.00713, PNAS 2025.

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§u: f64

Somatic membrane potential.

§v_basal: f64

Basal dendrite potential.

§v_apical: f64

Apical dendrite potential.

§tau: f64

Soma time constant.

§tau_b: f64

Basal dendrite time constant.

§tau_a: f64

Apical dendrite time constant.

§g_ratio: f64

Basal-to-soma conductance ratio (g_B/g_L).

§beta: f64

Sigmoid steepness for apical gating.

§v_th: f64

Spike threshold.

§dt: f64

Time step.

Implementations§

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impl MulticompartmentMCNNeuron

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pub fn new() -> Self

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fn sigma(&self, x: f64) -> f64

Sigmoid gating function σ(x) = 1/(1 + exp(-βx)).

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pub fn step_compartments( &mut self, x_basal: f64, x_apical: f64, i_soma: f64, ) -> i32

Step with basal input (x_b), apical input (x_a), and direct somatic input.

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pub fn step(&mut self, current: f64) -> i32

Simple step: input goes to basal dendrite only.

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pub fn reset(&mut self)

Trait Implementations§

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impl Clone for MulticompartmentMCNNeuron

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fn clone(&self) -> MulticompartmentMCNNeuron

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for MulticompartmentMCNNeuron

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for MulticompartmentMCNNeuron

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fn default() -> Self

Returns the “default value” for a type. Read more

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