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Balancing Brain Plasticity / Stability

EVENT: 
CANCELLED
Who Should Attend: 
Researchers

Speakers

Guest Speaker
Dr. Hensch's Photo
Professor, Molecular Cellular Biology & Neurology (Children’s Hospital)
Center for Brain Science
Director
IRCN (UTIAS) & NIMH Silvio Conte Center

Abstract 

Brain function is largely shaped by experience in early life, creating windows of both great opportunity and vulnerability. Our work has focused on the biological basis for such critical periods, identifying both “triggers” and “brakes” on plasticity. Strikingly, the maturation of particular inhibitory circuits is pivotal for the onset timing of these windows. Manipulations of their emergence can either accelerate or delay developmental trajectories regardless of chronological age. Notably, many neurodevelopmental disorders are linked to alterations in excitatory-inhibitory balance, suggesting shifted critical period timing as part of their etiology. Closure of critical periods in turn reflects an active process, rather than a purely passive loss of plasticity factors. Lifting these brakes allows the reopening of plastic windows later in life, but may also underlie instability in disease states. Thus, understanding how brain plasticity and stability are balanced throughout life offers new insight into mental illness and novel therapeutic strategies for recovery of function in adulthood.

Takao K. Hensch, Ph.D. Figure 1  Takao K. Hensch, Ph.D. Figure 2

Publications

Sigal YM, Bae H, Bogart LJ, Hensch TK, Zhuang X.
Structural maturation of cortical perineuronal nets and their perforating synapses revealed by superresolution imaging.
Proc Natl Acad Sci U S A. 2019 Apr 2;116(14):7071-7076. doi: 10.1073/pnas.1817222116. Epub 2019 Mar 19.
Takesian AE, Bogart LJ, Lichtman JW, Hensch TK.
Inhibitory circuit gating of auditory critical-period plasticity.
Nat Neurosci. 2018 Feb;21(2):218-227. doi: 10.1038/s41593-017-0064-2. Epub 2018 Jan 22.
Werker JF, Hensch TK.
Critical periods in speech perception: new directions.
Annu Rev Psychol. 2015 Jan 3;66:173-96. doi: 10.1146/annurev-psych-010814-015104. Epub 2014 Sep 17.

When

Tuesday, October 1, 2019 - 12:30pm

Where

785 Mamaroneck Avenue
White Plains, NY 10605
United States
Conference Room: 
Billings Building – Rosedale

More Information

Lindsey Echevarria