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DopamineStdpSynapse

sc_neurocore_engine::synapses

Struct DopamineStdpSynapse 

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pub struct DopamineStdpSynapse {
Show 15 fields
    pub weight: f64,
    pub w_min: f64,
    pub w_max: f64,
    pub eligibility: f64,
    pub dopamine: f64,
    pub trace_pre: f64,
    pub trace_post: f64,
    pub tau_e: f64,
    pub tau_da: f64,
    pub tau_pre: f64,
    pub tau_post: f64,
    pub a_plus: f64,
    pub a_minus: f64,
    pub lr: f64,
    pub dt: f64,

}
Expand description

Dopamine-gated STDP: learning rate modulated by global reward signal.

Standard STDP with an eligibility trace gated by dopamine concentration. Weight updates only occur when dopamine is present:

dw/dt = DA(t) · e(t) de/dt = -e/τ_e + STDP(Δt) · δ(t_spike) dDA/dt = -DA/τ_DA + reward(t)

Reference: Izhikevich (2007) “Solving the distal reward problem through linkage of STDP and dopamine signaling”, Cerebral Cortex 17(10).

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§weight: f64§w_min: f64§w_max: f64§eligibility: f64§dopamine: f64§trace_pre: f64§trace_post: f64§tau_e: f64§tau_da: f64§tau_pre: f64§tau_post: f64§a_plus: f64§a_minus: f64§lr: f64§dt: f64

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impl DopamineStdpSynapse

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pub fn new(weight: f64, w_min: f64, w_max: f64) -> Self

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pub fn step(&mut self, pre_spike: bool, post_spike: bool, reward: f64)

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pub fn reset(&mut self)

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impl Clone for DopamineStdpSynapse

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fn clone(&self) -> DopamineStdpSynapse

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 DopamineStdpSynapse

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

Formats the value using the given formatter. Read more

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