ReviewFrontiers in neuroendocrinology2023
Steroid-dependent plasticity in the song control system: Perineuronal nets and HVC neurogenesis.
Review in Frontiers in neuroendocrinology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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3 citing papers in PubMed, 5 citations in OpenAlex.
- Sex differences in structural and receptor mRNA expression in the ventral anterior cingulate cortex and a potential role of perineuronal nets in monogamous pair bond establishment (Peromyscus californicus).Biology of sex differences · 2025Article
- Distribution of perineuronal nets in the adult rat neocortex.Somatosensory & motor research · 2025Article
- Seasonal patterns of neurogenesis in European starlings (Sturnus vulgaris) are region- and sex-specific.Journal of neuroendocrinology · 2025Article
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Abstract
The vocal control nucleus HVC in songbirds has emerged as a widespread model system to study adult brain plasticity in response to changes in the hormonal and social environment. I review here studies completed in my laboratory during the last decade that concern two aspects of this plasticity: changes in aggregations of extracellular matrix components surrounding the soma of inhibitory parvalbumin-positive neurons called perineuronal nets (PNN) and the production/incorporation of new neurons. Both features are modulated by the season, age, sex and endocrine status of the birds in correlation with changes in song structure and stability. Causal studies have also investigated the role of PNN and of new neurons in the control of song. Dissolving PNN with chondroitinase sulfate, a specific enzyme applied directly on HVC or depletion of new neurons by focalized X-ray irradiation both affected song structure but the amplitude of changes was limited and deserves further investigations.
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