title: The relationship of a monoamine fiber system to a somatosensory tectal projection in the salamander Ambystoma tigrinum.
abstract: After hemisection of the spinal cord and medulla oblongata, a projection has been traced to the inner half of the tectal white of the tiger salamander, using Fink-Heimer degeneration staining. By microelectrode recording it was found that the tectal projection forms a topographic somatosensory map of the contralateral half of the body. This map is in register with the overlying retino-tectal visual projection. Using the Falck-Hillarp technique, it was found that the somatosensory tectal input is associated with yellow-fluorescing 5-hydroxytryptamine fibers.
mesh_terms: D000818:Animals; D001679:Biogenic Amines / Q000502:physiology; D004558:Electric Stimulation; D008526:Medulla Oblongata / Q000502:physiology; D008839:Microelectrodes; D013116:Spinal Cord / Q000502:physiology; D003336:Tectum Mesencephali / Q000502:physiology*; D014562:Caudata / Q000502:physiology
chemical_list: D001679:Biogenic Amines