Neuroimaging insights into network-based neurodegeneration

Area of Science:

• Neuroscience
• Medical Imaging

Background:

• Growing evidence suggests neurodegenerative diseases like Alzheimer's progress along interconnected brain networks.
• Understanding these network pathways is crucial for developing effective treatments.

Purpose of the Study:

• To review the role of neuroimaging in supporting the network-based neurodegeneration hypothesis.
• To elucidate the mechanisms underlying network progression in neurodegenerative disorders.

Main Methods:

• Utilizing advances in functional and structural Magnetic Resonance Imaging (MRI) to delineate brain networks.
• Applying network-imaging modalities to study neurodegenerative diseases.
• Employing theoretical measures of network efficiency on in-vivo imaging data.
• Developing novel MRI acquisition and analysis methods for microcircuit assessment.

Main Results:

• Specific neurodegenerative disorders demonstrate distinct patterns of progression along defined brain networks.
• Models of disease spread along networks have been developed and evaluated using in-vivo imaging.
• New MRI techniques allow for in-vivo assessment of microcircuits targeted early in disease progression.

Conclusions:

• Neuroimaging provides strong evidence for network-based progression in neurodegenerative disorders.
• Current research is beginning to reveal the specific mechanisms driving this network degeneration.