Kent K S, Hildebrand J G
Philos Trans R Soc Lond B Biol Sci. 1987 Jan 27;315(1168):1-36. doi: 10.1098/rstb.1987.0001.
Central projections of neurons innervating sensory structures on the head of larval Manduca sexta were traced by using methods of anterograde cobalt-diffusion. Regions of the deutocerebrum and tritocerebrum in the brain receive input from the antenna, labrum, maxilla, labial palps, hypopharynx and other unidentified regions of the buccal cavity. Antennal, maxillary and labial inputs project to the larval antennal centre (LAC) of the deutocerebrum. Stemmatal neurons and a few antennal neurons project into the protocerebrum. The suboesophageal ganglion (SEG) receives input from mechanosensory neurons in all parts of the head and its sensory appendages. Some mechanosensory neurons project further to the first thoracic ganglion. In addition to receiving input from chemosensory neurons of the maxilla, the SEG may also receive chemosensory input from epipharyngeal sensilla of the labrum.
通过顺行性钴扩散法追踪了幼虫烟草天蛾头部支配感觉结构的神经元的中枢投射。脑中的中脑和后脑区域接收来自触角、上唇、下颚、唇须、下咽和口腔其他未明确区域的输入。触角、下颚和唇部的输入投射到中脑的幼虫触角中心（LAC）。气门神经元和一些触角神经元投射到前脑。咽下神经节（SEG）接收来自头部所有部位及其感觉附属器的机械感觉神经元的输入。一些机械感觉神经元进一步投射到第一胸神经节。除了接收来自下颚化学感觉神经元的输入外，咽下神经节还可能接收来自上唇咽感觉器的化学感觉输入。
