Research has shown that nostalgia is associated with specific patterns of brain activation. When experiencing nostalgia, brain regions that are linked to memory and emotions, such as the hippocampus, ventromedial prefrontal cortex, and amygdala, tend to be more active. The hippocampus, known for its role in memory formation and retrieval, is particularly engaged during nostalgic experiences. This region helps to consolidate and retrieve memories, which explains why nostalgia often involves vivid recollections of the past.