Astrocytes and Spaced Learning: Key to Memory Retention

Researchers at Tohoku University have discovered that astrocytes, cells surrounding neurons, play a crucial role in determining which memories are retained or forgotten. By using optogenetics to manipulate astrocytes in mice, they found that acidifying these cells after a traumatic event leads to memory loss, while alkalinizing them preserves memories long-term. This finding challenges the traditional view that short- and long-term memories form sequentially, suggesting they may develop in parallel. The study could inform new treatments for PTSD by targeting astrocyte functions.