Amygdala-mPFC Fear Extinction Simulator Neuro-Circuit v2.4

Exposure Therapy Plasticity (LA/CeA Threat vs. mPFC/ITC Infralimbic Gating)
Live 2D Synaptic Circuit Diagram STATUS: READY
Sensory / LA Excitation
CeA Threat Output
mPFC Top-Down Control
ITC GABAergic Inhibition
Synaptic Weight Matrix (LTP / LTD Plasticity)
Pathway Type Initial Weight Current Weight Plasticity Target
Thalamus → LA (Conditioned Stimulus) Excitatory 1.00 1.00 LTD (Depression)
LA → CeA (Threat Output) Excitatory 0.90 0.90 LTD (Depression)
mPFC Infralimbic → ITC Intercalated Excitatory Gating 0.20 0.20 LTP (Potentiation)
ITC Intercalated → CeA Inhibition GABAergic Inhibitory 0.25 0.25 LTP (Potentiation)
Relapse Vulnerability Testing Suite
Extinction Telemetry Readout Trial 20 / 20
Fear Response 0.08 Norm
ITC GABA Tone 0.84 Abs
mPFC Gain 0.75 Gain
Relapse Risk Low
Real-time Fear Extinction Response Waveform
Exposure Protocol Configuration
Mechanistic Insight: Extinction therapy does not erase the original fear memory trace in the Basolateral Amygdala (LA). Instead, repeated non-reinforced Conditioned Stimulus (CS) presentations engage the mPFC Infralimbic Cortex (IL) to drive Long-Term Potentiation (LTP) at GABAergic Intercalated Cells (ITC), suppressing Central Amygdala (CeA) output.
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