The human brain’s time cells help us recall episodic memories. Time cells have been found inside human brains which allows us to track the flow of time and sequence of events, according to a new study led by scientists in France.
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Credits: Image: The Tonegawa Lab, edited by MIT News
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When we experience a new event, our brain records a memory of not only what happened, but also the context, including the time and location of the event. A new study from MIT neuroscientists sheds light on how the timing of a memory is encoded in the hippocampus, and suggests that time and space are encoded separately.
In a study of mice, the researchers identified a hippocampal circuit that the animals used to store information about the timing of when they should turn left or right in a maze. When this circuit was blocked, the mice were unable to remember which way they were supposed to turn next. However, disrupting the circuit did not appear to impair their memory of where they were in space.