The dialectic of Hebb and homeostasis
Abstract
It has become widely accepted that homeostatic and Hebbian plasticity mechanisms work hand in glove to refine neural circuit function. Nonetheless, our understanding of how these fundamentally distinct forms of plasticity compliment (and under some circumstances interfere with) each other remains rudimentary. Here, I describe some of the recent progress of the field, as well as some of the deep puzzles that remain. These include unravelling the spatial and temporal scales of different homeostatic and Hebbian mechanisms, determining which aspects of network function are under homeostatic control, and understanding when and how homeostatic and Hebbian mechanisms must be segregated within neural circuits to prevent interference.
This article is part of the themed issue ‘Integrating Hebbian and homeostatic plasticity’.
Acknowledgements
I thank many co-workers and collaborators—including Sacha Nelson, Eve Marder, Larry Abbott and all the members of the Turrigiano laboratory past and present—for contributing to the evolution of my ideas about the function of homeostatic mechanisms.
Endnote
We maintain a small shrine devoted to reviewer 3. In all fairness to reviewers 1 and 2, the manuscript was dramatically improved in response to their critiques.
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