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Scientists reveals brain s spatial processing mechanisms by Angela Mohan on February 16, 2021 at 3:30 PM
Place cells in the hippocampus encode spatial information using interchangeably two distinct information processing mechanisms referred to as a rate code and a phase code, analogue to the number and spatial arrangement of bars in bar codes, as per the research team led by Sebastien Royer at KIST Brain Science Institute (BSI), in collaboration with a research team at New York University (NYU).
In addition, the research team found that parallel neural circuits and information processing mechanisms are used depending on the complexity of the landmarks along the path.
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.