Historical controversies about the thalamus: from etymology to function

Area of Science:

• Neuroscience
• Neuroanatomy
• History of Science

Background:

• The human thalamus's function is understood through three key domains: anatomical identification, subdivision into nuclei, and experimental physiology.
• Historical figures like Galen and Burdach contributed to defining the thalamus and its macro- and microarchitecture.

Observation:

• Discrepancies arose from interspecies differences in anatomical studies, leading to inconsistent nomenclatures.
• Early functional insights stemmed from lesion and tracing studies, with in vivo data primarily from awake stereotactic procedures.

Findings:

• Understanding human thalamus function evolved over centuries, intertwined with anatomical discoveries.
• While thalamic anatomy is well-established, further research is needed for deeper insights into its in vivo function.

Implications:

• A unified thalamic nomenclature, based on functional data, is crucial for future research.
• Continued investigation into the human thalamus's in vivo function is essential for advancing neuroscience.