NeuroethologyFunctional connections between the HVC and the shelf of the zebra finch revealed by real-time optical imaging techniqueWang, Jian1, CA; Sokabe, Masahiro1,2; Sakaguchi, Hironobu3,4Author Information 1Department of Physiology, Nagoya University School of Medicine, and 2Cell Mechanosensing Project, ICORP, JST, 65 Tsurumai, Nagoya 466-8550; 3Department of Physiology, Dokkyo University, School of Medicine, and 4Intelligence and Synthesis, Precursory Research for Embryonic Science and Technology, JST, Mibu, Tochigi 321-0293, Japan CACorresponding Author Received 9 October 2000; accepted 12 November 2000 Neuroreport: February 12, 2001 - Volume 12 - Issue 2 - p 215-221 Buy Abstract Auditory–motor interaction is essential for the understanding of avian song learning and maintenance. The HVC is thought to be the most important station for auditory-motor integration in the avian song system. However, little is known about where and how auditory inputs are conveyed into the HVC. The shelf, a multi-auditory recipient region located along the ventral border of the HVC, is thought to be a possible source of auditory inputs to the HVC. Here, we investigated the functional neural connections between the HVC and surround- ing area of the HVC including the shelf in zebra finch brain slices, using the real-time optical recording technique. Unexpectedly electrical stimulation of the shelf region did not induce signal propagation into the HVC, but stimulation within the HVC propagated strong signals into the shelf. These results suggest that the shelf is the region that receives output signals from the HVC, rather than a major source of auditory inputs to the HVC. © 2001 Lippincott Williams & Wilkins, Inc.