科学研究

Seminars

Social interactions regulates song perception in juvenile zebra finches during song learning

2019-05-29



Seminar Type



Preferred Location

First Floor Lecture Hall, Jianzan Building(Phase I)

Chinese Institute for Brain Research, Beijing


Time

13:00-14:00 pm Wednesday

May29, 2019


Speaker

Yoko Yazaki-Sugiyama, PhD

Principal Investigator, Associate Professor

Development Project Associate Professor

Neuronal Mechanism for Critical Period Unit, Okinawa   Institute of Science and Technology Graduate University

International Research Center for Neurointelligence (IRCN),   The University of Tokyo


Host

Dr. Minmin Luo


Topic

Social interactions regulates song perception in juvenile   zebra finches during song learning


Abstract

Juvenile   zebra finches learn to sing through vocal communications with their adult   tutors. Song learning improves through social interactions with tutors,   compared to passive listening to recorded tutor song playbacks. This suggests   that high attention level, induced by social interactions with tutors,   enhances song learning. We investigated whether social interactions change   attention level and how that change affects song learning by recording   activities of neurons in the attention control brain area, the nucleus locus   coeruleus (LC), and the higher auditory area, the caudomedial nidopallium   (NCM), where tutor song memories are suggested to be stored. We found that   both LC and NCM neurons responded more intensely to live tutor singing than   to TUT playbacks. Anatomical analysis showed that LC neurons, which were   activated by exposure to live tutor singing, project to the NCM. Taken   together, we suggest that social interactions with tutors modulate neuronal   activity of the LC, which affects selective auditory responses of the NCM   neurons, resulting in tutor song memory formation.


Speaker

Biography

Dr. Yoko Yazaki-Sugiyama earned a Ph.D. from Sophia University   on the neuroethological studies of quail vocal behavior. She started songbird   study at my first postdoctoral fellowship in Rich Mooney’s lab at Duke   University and then examined critical period neuronal mechanisms at Takao   Hensch’s lab at the RIKEN Brain Science Institute before moving to an   independent position at the Okinawa Institute of Science and Technology   (OIST) Graduate University and subsequently to The University of Tokyo.

Her study mainly focus on Neuronal Circuits Shaped by Early Experience for Learning Behaviors.   The brain’s neuronal circuits are shaped by sensory experiences from the   environment in early life. The wiring of neuronal circuits in this early   critical period are essential to control the later development of higher   cognitive functions. As human babies learn to speak from what they hear,   songbirds learn to sing from what they listen to in the critical period   developmental time window. Songbird song learning from auditory experiences   include many interesting questions such as: how do they detect their own   species songs and learn from them? How can they selectively learn from   specific birds, normally their fathers, from the variety of songs they hear?   Why do they learn only during a specific period of time during development? Her   lab is tackling these questions and hope to understand how our nascent brain   circuits make such intelligence possible.