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Brain Imaging

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...

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Diving into the brain: deep-brain imaging techniques in conscious animals.

Pauline Campos¹, Jamie J Walker^1,2,3, Patrice Mollard⁴

¹College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK.

The Journal of Endocrinology

|May 8, 2020

Summary

Researchers can now study hypothalamic neuron activity in real-time using advanced deep-brain imaging. This technique allows for in-situ observation of neuroendocrine neurons in awake animals, preserving crucial regulatory loops.

Keywords:

conscious animals deep-brain imaging neuroendocrinology neuronal activity whole animal physiology

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Area of Science:

Neuroscience
Endocrinology
Physiology

Background:

Hypothalamic control of endocrine axes is vital for survival, regulating reproduction, growth, and metabolism.
Traditional in vitro/ex vivo methods limit understanding of the intact hypothalamic-pituitary axis and its regulatory mechanisms.
Studying hypothalamic neuron activity in situ within complex regulatory loops has been challenging.

Purpose of the Study:

To highlight deep-brain imaging techniques for studying neuroendocrine neurons in awake animals.
To maintain the integrity of brain-pituitary-peripheral regulatory loops during observation.
To provide practical guidance for researchers implementing these advanced imaging methods.

Main Methods:

Utilizing modern neuronal transfection and advanced imaging techniques.
Employing deep-brain imaging of calcium activity in real-time.
Using chronically implanted gradient-index lenses for in situ imaging of hypothalamic neurons.

Main Results:

Deep-brain imaging enables real-time, in situ study of hypothalamic neuron activity in conscious animals.
This approach preserves the complex regulatory interactions within the neuroendocrine system.
Single-cell resolution imaging of multiple neurons is achievable through implanted lenses.

Conclusions:

Deep-brain imaging revolutionizes the study of hypothalamic control of endocrine function.
These techniques offer unprecedented insights into neuroendocrine regulation in a physiological context.
Practical implementation guides will facilitate wider adoption of these powerful research tools.