Have you noticed that those repeated emotional moments (usually negative ones) tend to stick longer? Waking up at 3 am because of embarrassing moments in college, or someone wronged us in the past. Why would we not remember “happy” or neutral events? Rather, we tend ot cringe towards those most awkward, scared, or shamed moments?
While it may sound like another “psychology common sense”, repeated emotional events do form stronger memories. According to a 2025 study at the University of Hamburg, researchers examined how the brain remembers emotional events that happen more than once. Participants viewed emotional and neutral scenes several times inside an MRI scanner and later completed a free-recall test.
The findings suggest that emotional scenes gain an early advantage during the first encounter, when the amygdala and anterior hippocampus respond strongly. As the same event repeats, memory becomes stronger because the brain reinstates a more stable neural pattern in frontoparietal regions.
But how stable can this pattern hold up, or is it just ephemeral? The finding also suggests that the degree of stability is usually shaped by how strong that initial amygdala response was. If put into a formula: a powerful first impression or stimulation + repeated exposure = a more precise, durable memory.
This theory may help explain why certain emotional experiences resurface so vividly, especially when we encounter similar cues again and again.
*What is the Daily Insight? An ongoing series of quick, bite-sized brain snacks. Every week, there are three research-based factual reports and three research-informed reflective notes.
