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Brain Aromatase, Estrogens, and Behavior$
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Jacques Balthazart and Gregory Ball

Print publication date: 2012

Print ISBN-13: 9780199841196

Published to Oxford Scholarship Online: January 2013

DOI: 10.1093/acprof:oso/9780199841196.001.0001

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Acute Synthesis and Action of Estrogens in Communication Circuits

Acute Synthesis and Action of Estrogens in Communication Circuits

Chapter:
(p.474) Chapter 25 Acute Synthesis and Action of Estrogens in Communication Circuits
Source:
Brain Aromatase, Estrogens, and Behavior
Author(s):

Luke Remage-Healey

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199841196.003.0025

This chapter explores recent evidence that estrogen production and action within acoustic communication circuits occurs rapidly, at the time scale of neuromodulation (seconds to minutes). The chapter traces historical roots of this relatively new idea, and summarizes insights from comparative studies of vocalizing fish and avian species, which have revealed two concepts: (1) estrogens can be produced locally within brain circuits independent of levels elsewhere in the brain and the circulation, and (2) estrogens can have rapid effects within brain circuits to modulate social communication behaviors and sensory processing. Primary breakthroughs are presented, which shift the focus of the production and action of estrogens on exceedingly local and rapid events within the brain itself, as revealed through studies of neural circuits that govern social communication. This new perspective could be broadly informative among vertebrates, given the wide range of brain regions that exhibit aromatase expression and activity.

Keywords:   acoustic, electrophysiology, microdialysis, neuromodulation, neurosteroids, nongenomic, speech

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