Memory Reconsolidation

Why You Can’t Stop Thinking About Your Ex: The Default Mode Network and Rumination Circuits When you cannot stop thinking about your ex, your default mode network is running a prediction-error loop it cannot close. Two DMN subsystems — the dorsomedial prefrontal cortex tracking “who am I now” and the medial temporal lobe replaying episodic memories — coordinate an unresolvable search for a partner who no longer exists in your predicted future. ...

Intrusive Thoughts After Infidelity: The Neuroscience of Why Your Brain Won’t Stop Replaying the Betrayal Intrusive thoughts after infidelity reflect three interlocking neural failures: hippocampal time-stamp failure under cortisol-saturated encoding, default mode network prediction-error looping as it tries to reconcile the old partner-model against new betrayal data, and thalamo-cortical gating failure that lets sensory cues trigger involuntary replay. It is a memory-architecture problem, not a character flaw. ...