Direct neural pathways convey distinct visual information to Drosophila mushroom bodies

eLife

Glenn C Turner¹  Yoshinori Aso¹  Stephan Knapek²  Hiromu Tanimoto²  Toshihide Hige³  Toshiharu Ichinose⁴  Anja B Friedrich⁴  Katrin Vogt⁴  Gerald M Rubin⁴ 

[1] Tohoku University Graduate School of Life Sciences, Sendai, Japan;Cold Spring Harbor Laboratory, Cold Spring Harbor, United States;Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States;Max-Planck Institut für Neurobiologie, Martinsried, Germany;

关键词: learning and memory;    neural circuit;    physiology;    behavior;    anatomy;   

DOI  :  10.7554/eLife.14009

来源: DOAJ

【 摘 要 】

Previously, we demonstrated that visual and olfactory associative memories of Drosophila share mushroom body (MB) circuits (Vogt et al., 2014). Unlike for odor representation, the MB circuit for visual information has not been characterized. Here, we show that a small subset of MB Kenyon cells (KCs) selectively responds to visual but not olfactory stimulation. The dendrites of these atypical KCs form a ventral accessory calyx (vAC), distinct from the main calyx that receives olfactory input. We identified two types of visual projection neurons (VPNs) directly connecting the optic lobes and the vAC. Strikingly, these VPNs are differentially required for visual memories of color and brightness. The segregation of visual and olfactory domains in the MB allows independent processing of distinct sensory memories and may be a conserved form of sensory representations among insects.

【 授权许可】

Unknown