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Place-related responses have been found in cells of the Japanese macaque and common marmoset, however, whether these are true place cells or spatial view cells is still debated. [60] Spatial view cells respond to locations that are visually explored by eye movement, or the "view of a space", rather than the location of the monkey's body. [ 74 ]
Red dots indicate locations at which a particular entorhinal grid cell fired. A grid cell is a type of neuron within the entorhinal cortex that fires at regular intervals as an animal navigates an open area, allowing it to understand its position in space by storing and integrating information about location, distance, and direction. [1]
Place cells are typically almost silent when a rat is moving around outside the place field but reach sustained rates as high as 40 Hz when the rat is near the center. Neural activity sampled from 30 to 40 randomly chosen place cells carries enough information to allow a rat's location to be reconstructed with high confidence.
Place cell activity was already well established when the first study explored this phenomenon in 1989. [5] They showed that neural activity of single place cells during sleep resembled the activity during the awake state. This activity was greater than that of other cells and this study was only the first step towards understanding replay.
The cell on the left is going through mitosis and its chromosomes have condensed. Cell nucleus: A cell's information center, the cell nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes, and is the place where almost all DNA replication and RNA synthesis (transcription) occur.
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The strength of the connections between the cells represents the distances between them in the actual environment. The same cells can be used for constructing several environments, though individual cells' relationships to each other may differ on a map by map basis. [8] The possible involvement of place cells in cognitive mapping has been seen ...
The terminal cell elongates more than the deeper cells; then the production of a lateral bisector takes place in the inner fluid, which tends to divide the cell into two parts, of which the deeper one remains stationary, while the terminal part elongates again, forms a new inner partition, and so on.