But not all experiences in a person's life are etched in memory, nor is it necessary to retain every bit of information. Here, emotions enter the memory process. Some neuroscientists believe the hippocampus helps select which memories are stored, perhaps by attaching an "emotion marker" to some events or information so they are more likely to be recalled.
- Q How do sex hormones affect brain function?
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- Q How do scientists study the effects of pleasure on the brain?