1002: Charan Ranganath | Why We Remember: Unlocking the Mysteries of Memory

Emotion's Role

Emotions significantly influence how we remember events, often making certain details more vivid. Charan Ranganath explains that during emotionally charged situations, chemicals like noradrenaline and cortisol enhance memory retention by focusing attention on specific elements 1. This is why traumatic events are hard to forget, as the brain prioritizes these memories for survival 2.

When you're emotionally aroused, the things that are attention grabbing stick out, and those are the things that you remember the most.

--- Charan Ranganath

Such memories are often more persistent, as the brain reinforces them to avoid future threats.

   

Memory Quirks

Memory recall can be quirky, influenced by emotional and attention cues, leading to phenomena like PTSD triggers and deja vu. Jordan Harbinger shares a story about a Vietnam veteran whose PTSD was triggered by the sound of a helicopter, illustrating how certain stimuli can transport individuals back to traumatic events 3.

It's not the first time, nor the last, I would imagine.

--- Jordan Harbinger

Deja vu, on the other hand, occurs when familiar cues partially activate memory circuits, creating a false sense of familiarity with new experiences 4.