Local Circuit in the Cerebral Cortex
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To reveal the mechanism of information processing in the cerebral cortex, we focused on the morphological analysis of its intrinsic circuitry. Recently, we developed a retrograde neuronal tracing method with Golgi-like soma-dendritic filling. By combining this method with the intracellular staining method, the local connection from pyramidal cells to corticospinal and corticothalamic projection neurons were examined in the motor and somatosensory cortical areas of the rat.