P ganglion cells project to which LGN layers?

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Prepare for the NBEO Ocular Anatomy Posterior Segment and Cranial Nerves Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

P ganglion cells project to which LGN layers?

Explanation:
The P ganglion cells feed into the parvocellular portion of the LGN. In primates, the LGN has six layers: the outer magnocellular layers (1 and 2) receive input from M cells, while the inner four layers (3 through 6) receive input from P cells. Since the P pathway carries high‑resolution, color‑sensitive information with small receptive fields, its projections line up with the inner four parvocellular layers. So the layers receiving P cell input are 3 through 6.

The P ganglion cells feed into the parvocellular portion of the LGN. In primates, the LGN has six layers: the outer magnocellular layers (1 and 2) receive input from M cells, while the inner four layers (3 through 6) receive input from P cells. Since the P pathway carries high‑resolution, color‑sensitive information with small receptive fields, its projections line up with the inner four parvocellular layers. So the layers receiving P cell input are 3 through 6.

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