How autobiographical memory rewrites your past and shapes your future

Autobiographical memory shapes how people remember their past experiences. These recollections include details like emotions, events, and the surrounding context. But even without trauma, memories can shift over time, leading to different versions of the same event. The brain relies on key regions to retrieve these personal memories. The hippocampus and amygdala play central roles in storing and recalling past events. Yet, mental illnesses such as schizophrenia can alter their structure and function, changing how memories are processed.

Autobiographical memory is not just about the past—it helps people understand their present and plan for the future. It also supports relationships by allowing individuals to share and reflect on shared experiences. However, disorders like depression, anxiety, and PTSD can disrupt this process, making memories harder to access or distorting them.

Even in healthy brains, memories are not always accurate. Emotions, beliefs, and the way information is stored can reshape how events are recalled. This can lead to disagreements when people remember the same event differently. The loss or distortion of autobiographical memory can have a deep impact on daily life. Without reliable recollections, people may struggle to make decisions, connect with others, or maintain a stable sense of identity. Research continues to explore how these memories form and why they sometimes fail.