Mri

Hamaide, Julie; Bigler, Annelien; Linden, Annemie Van der

doi:10.1016/b978-0-12-812028-6.00025-2

Cited by 2 publications

(1 citation statement)

References 165 publications

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“…It is important to know that MRI can make virtual slices through a living subject creating voxels (volume elements) with different types of contrast correlating to a broad set of physiological phenomena resulting in spatial anatomical and functional information. For a broader view on the use of in vivo MRI to study neuroplasticity we refer to our review (Hamaide et al, 2016 ), for more specific use of MRI to study neuroplasticity in songbirds we refer to (Hamaide et al, 2018a ; Van der Linden et al, 2009 ) and for more details on the functional MRI (fMRI) methods adapted to songbirds we refer to (Poirier et al, 2010 ; Van Ruijssevelt et al, 2013 ). In this review we discuss how in vivo MRI was applied (i) to explore seasonal changes in the SCS and brain wide, (ii) to study the contribution of hormones in seasonal neuroplasticity (iii) to identify which photoperiod coincides with heightened neuroplasticity and (iv) to identify the structural and functional neural correlate and substrate of song performance and song perception.…”

Section: Scope Of the Reviewmentioning

confidence: 99%

A brain for all seasons: An in vivo MRI perspective on songbirds

Orije

Linden

2022

J Exp Zool Pt A

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Seasonality in songbirds includes not only reproduction but also seasonal changes in singing behavior and its neural substrate, the song control system (SCS). Prior research mainly focused on the role of sex steroids on this seasonal SCS neuroplasticity in males. In this review, we summarize the advances made in the field of seasonal neuroplasticity by applying in vivo magnetic resonance imaging (MRI) in male and female starlings, analyzing the entire brain, monitoring birds longitudinally and determining the neuronal correlates of seasonal variations in plasma hormone levels and song behavior. The first MRI studies in songbirds used manganese enhanced MRI to visualize the SCS in a living bird and validated previously described brain volume changes related to different seasons and testosterone. MRI studies with testosterone implantation established how the consequential boost in singing was correlated to structural changes in the SCS, indicating activity-induced neuroplasticity as song proficiency increased. Next, diffusion tensor MRI explored seasonal neuroplasticity in the entire brain, focusing on networks beyond the SCS, revealing that other sensory systems and even the cerebellum, which is important for the integration of sensory perception and song behavior, experience neuroplasticity starting in the photosensitive period. Functional MRI showed that olfactory, and auditory processing was modulated by the seasons.The convergence of seasonal variations in so many sensory and sensorimotor systems resembles multisensory neuroplasticity during the critical period early in life.This sheds new light on seasonal songbirds as a model for unlocking the brain by recreating seasonally the permissive circumstances for heightened neuroplasticity.

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Section: Scope Of the Reviewmentioning

confidence: 99%

A brain for all seasons: An in vivo MRI perspective on songbirds

Orije

Linden

2022

J Exp Zool Pt A

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Molecular and microstructural biomarkers of neuroplasticity in neurodegenerative disorders through preclinical and diffusion magnetic resonance imaging studies

Gatto¹

2020

J. Integr. Neurosci.

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Advances in the understanding of genetic and molecular mechanisms and imaging technologies have opened a new window of research possibilities to address dynamic processes associated with neuroplasticity in physiologically intact models of neurodegenerative diseases. This review aims to: (i) establish the most relevant molecular mechanisms, as well as cellular and structural biomarkers in the study of neuroplasticity; (ii) introduce different neurodegenerative diseases in animal models that contribute to our knowledge of neuroplasticity; and (iii) illustrate the capabilities and limitations of current diffusion magnetic resonance imaging techniques to study cortical plasticity, as well as the use of alternative diffusion models.

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Mri

Cited by 2 publications

References 165 publications

A brain for all seasons: An in vivo MRI perspective on songbirds

A brain for all seasons: An in vivo MRI perspective on songbirds

Molecular and microstructural biomarkers of neuroplasticity in neurodegenerative disorders through preclinical and diffusion magnetic resonance imaging studies

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