Editing bad memories

Most people go through life carrying experiences they wish they could forget, or at least change. Regret is a deeply common human emotion. And while the idea of editing or erasing memories remains the stuff of science fiction, what research tells us about how memory actually works is both surprising and genuinely useful.

What memory really is

Most people understand human memory as something like a computer's storage system: a collection of files that play back like a movie when accessed. Vivid, hazy, or somewhere in between, but essentially fixed. This is not how memory works at all.

Every time you recall a memory, your brain performs a complex function that can be described as rewiring the connections between neurons. In other words, memory is not retrieved unchanged; it is actively reconstructed each time. If a computer file underwent a software update every single time you opened it, you would have some sense of how cognitively demanding the process of recalling a memory actually is. And crucially, the memory itself is being re-memorised with each recall. This means it changes.

Using the movie analogy: it is as though the film is being edited while you are watching it, every time you watch it. The version you remember is not quite the same as the version you remembered before. This is not a flaw; it is a feature of how the brain learns and updates its understanding of the world.

Why this matters for trauma and distress

For psychotherapy, this understanding is invaluable, particularly when working with traumatic memories or Post Traumatic Stress Disorder. The fact that our brains are continuously reconstructing memories during recall means there are opportunities to influence that reconstruction in ways that reduce distress. Evidence-based treatments like EMDR and trauma-focused cognitive behavioural therapy work with this very mechanism. As explored in our post on myths about trauma, the way we think about traumatic memory profoundly shapes what we think can be done about it.

What memories do for us

Our memories of our own lives and experiences drive our behaviours, values, and attitudes. They shape our sense of identity. The memory of a speeding fine makes most people more careful behind the wheel. A positive outcome from taking a calculated risk makes future risk-taking feel more acceptable. Memory is not passive storage; it is an active driver of how we move through the world.

It is also worth understanding that different types of memories serve different functions. When psychologists and researchers discuss the therapeutic editing of memories, the goal is to reduce the emotional impact of recalling a distressing experience, not to erase the factual record. The episodic memory, which stores what happened, when, where, and with whom, is retained. What changes is the intensity of the emotional and physiological response triggered by that recall. Understanding trauma requires making this distinction clearly.

Seeking help for distressing memories

It is important not to attempt to recall highly distressing memories alone. Doing so can re-trigger the same emotional and physiological responses that occurred when the memory was formed, including panic, fear, and a sense of helplessness. If you struggle with distressing memories from traumatic or painful events, reaching out to a psychologist or trained mental health professional is the appropriate first step. They can assess whether PTSD is present, and then guide you through evidence-based interventions designed to ensure your wellbeing remains central throughout the process.

Final thoughts

Memory is one of the most fascinating and misunderstood aspects of human psychology. The good news is that its reconstructive nature, which can feel like a limitation, is also what makes healing possible. If distressing memories are affecting your quality of life and you would like to explore what support might look like, our team at Contemporary Psychology in St Kilda is here to help.