Mapping sheep to human brain: The need for a sheep brain atlas

Area of Science:

• Neuroscience
• Comparative Anatomy
• Medical Imaging

Background:

• Brain atlases are vital for understanding neuroanatomical relationships and aiding translational neuroscience.
• Standard stereotaxic coordinates exist for humans and primates, but are lacking for sheep.
• Sheep share neuroanatomical and neurofunctional similarities with humans, making them valuable research models.

Purpose of the Study:

• To highlight the need for a detailed stereotaxic sheep brain atlas.
• To discuss the limitations in current sheep neurosurgical approaches due to the lack of such an atlas.
• To emphasize the potential of sheep as a non-primate model in neurological research.

Main Methods:

• Review of existing literature on brain atlases and stereotaxy.
• Discussion of advanced neuroimaging techniques (CT, PET, MRI, fMRI, DTI) and their limited application in sheep.
• Mention of recent high-resolution MRI-based 3D stereotaxic sheep brain atlases.

Main Results:

• A significant scarcity of detailed stereotaxic sheep brain atlases exists.
• Current neuroimaging applications in sheep are hampered by the lack of a comprehensive 3D atlas for mapping to human counterparts.
• A recently generated high-resolution MRI 3D stereotaxic atlas of the sheep brain has been developed.

Conclusions:

• A detailed 3D stereotaxic sheep brain atlas is essential for advancing translational neurological research.
• Such an atlas will facilitate the direct mapping of sheep brain structures to human ones.
• Developing this atlas will enhance the utility of sheep as a large animal experimental model.