Role of LMAN in Introductory Notes learning in the male zebra finch

Abstract

Understanding the neural mechanisms underlying vocal learning in songbirds is crucial for decoding the fundamental principles of motor skill acquisition. In this collaborative study, I investigated the role of the lateral magnocellular nucleus of the anterior nidopallium (LMAN) in IN (Introductory Notes) learning in zebra finches. Building on the previous results from the lab, I examined the impact of LMAN lesions on the learning of song motifs and introductory notes (INs) in juvenile birds. Our preliminary results reveal that LMAN-lesioned birds exhibit impaired learning of IN structures and number compared to socially tutored birds, suggesting a potential role of LMAN in controlling IN learning. Histological examinations confirm the absence or reduced volume of LMAN in lesioned birds compared to sham lesioned counterparts. These findings direct us toward understanding the neural circuitry underlying vocal learning and highlight the importance of LMAN in modulating specific aspects of INs acquisition.