PARIETAL, TEMPORAL, AND OCCIPITAL PROJECTIONS TO CORTEX OF THE SUPERIOR TEMPORAL SULCUS IN THE RHESUS-MONKEY - A RETROGRADE TRACER STUDY

The afferent cortical connections of individual cytoarchitectonic area s within the superior temporal sulcus (STS) of the rhesus monkey were studied by retrograde tracer techniques, including double tracer exper iments. Rostral superior temporal polysensory (STP) cortex (area TPO-1 ) receives input from the rostral superior temporal gyrus (STG), corte x of the circular sulcus, and parahippocampal gyrus (PHG) (areas 35, T F, and TL). Mid-STP cortex (areas TPO-2 and -3) has input from the mid -STG, cortex of the mid-circular sulcus, caudal inferior parietal lobu le (IPL), cingulate gyrus (areas, 23, 24, retrosplenial cortex), and m id-PHG (areas 28, TF, TH, and TL). Caudal STP cortex (area TPO-4) has afferent connections with the caudal STG, cortex of the caudal insula and caudal circular sulcus, caudal IPL, lower bank of the intraparieta l sulcus (IFS), medial parietal lobe, cingulate gyrus, and mid- and ca udal PHG (areas TF, TH, TL; prostriate area). The most rostral cortex of the lower bank of the STS (areas TEa and TEm), a presumed visual as sociation area, receives input from the rostral inferotemporal (IT) re gion; more caudal portions of areas TEa and TEm have afferent connecti ons with the caudal IT region, PHG, preoccipital gyrus,;and cortex of the lower bank of the IPS. (C) 1994 Wiley-Liss, Inc.()