Calyx of Held Calyx of Held The Calyx of Held is a particularly large synapse in the mammalian auditory central nervous system, so named by Hans Held in his 1893 article "Die centrale Gehörleitung" because of its resemblance to the calyx of a flower. Globular bushy cells in the anteroventral cochlear nucleus (AVCN) send axons to the contralateral medial nucleus of the trapezoid body (MNTB), where they synapse via these calyces on MNTB principal cells. These principal cells then project to the ipsilateral lateral superior olive (LSO), where they inhibit postsynaptic neurons and provide a basis for interaural level detection (ILD), required for
Systematic Botany Systematic Botany Systematic Botany is a peer-reviewed scientific journal covering the study of systematic botany. It is published quarterly by the American Society of Plant Taxonomists. According to the "Journal Citation Reports", the journal has a 2010 impact factor of 1.897. "Systematic Botany" was established in spring 1976 under founding editor-in-chief William Louis Culberson (Duke University). The current editor-in-chief is James F. Smith (Boise State University). The American Society of Plant Taxonomists also publishes the peer-reviewed taxonomic monograph series, "Systematic Botany Monographs" since 1980. "Systematic Botany" is abstracted and indexed in Agricola, Agris, BioOne, PubMed, Scirus, and Science Citation Index