Thalamus is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@sherman2013]
Overview
The thalamus is a dual-lobed structure located in the diencephalon, situated between the [cerebral cortex](/brain-regions/cerebral-cortex) and [midbrain](/brain-regions/midbrain). It serves as the brain's central relay station, processing and transmitting sensory information (except olfaction) to the cerebral cortex. The thalamus is composed of numerous nuclei, each with specific connections and functions. [@jones2007]
Overview
The thalamus is a large mass of gray matter in the diencephalon of the brain. [@steriade1997]
...
Brain Atlas Resources
This section links to atlas resources relevant to Thalamus.
Allen Human Brain Atlas: [Thalamus expression search](https://human.brain-map.org/microarray/search/show?search_term=Thalamus)
Allen Mouse Brain Atlas: [Thalamus search](https://mouse.brain-map.org/search/index.html?query=Thalamus)
Allen Cell Type Atlas: [Transcriptomic cell type reference](https://portal.brain-map.org/atlases-and-data/rnaseq)
Thalamus is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@sherman2013]
Overview
The thalamus is a dual-lobed structure located in the diencephalon, situated between the [cerebral cortex](/brain-regions/cerebral-cortex) and [midbrain](/brain-regions/midbrain). It serves as the brain's central relay station, processing and transmitting sensory information (except olfaction) to the cerebral cortex. The thalamus is composed of numerous nuclei, each with specific connections and functions. [@jones2007]
Overview
The thalamus is a large mass of gray matter in the diencephalon of the brain. [@steriade1997]
The thalamus is a large midline structure serving as the brain's central relay station, processing and distributing information between different brain regions. It is involved in virtually every major neural pathway. [@hwang2017]
Anatomy
Major Nuclei Groups
Sensory Relays
Ventral posterolateral (VPL): Somatosensory
Ventromedial (VM): Motor-related
Lateral geniculate (LGN): Visual
Medial geniculate (MGN): Auditory
Limbic Nuclei
Anterior thalamic nuclei: Papez circuit
Mediodorsal (MD): Prefrontal cortex
Pulvinar: Visual attention
Motor Nuclei
Ventral lateral (VL): Cerebellar relay
Ventral anterior (VA): Basal ganglia relay
Connectivity
Cortex to cortex
Subcortical to cortical
Brainstem to [cerebellum](/brain-regions/cerebellum)
| Target | Indication | Mechanism | |--------|------------|-----------| | VL | PD tremor | Motor thalamus modulation | | CM | Epilepsy | Arousal system modulation | | MD | Depression | Limbic circuit modulation | | PF | Tourette's | Motor control modulation |
Radiofrequency Lesioning
Thalamotomy: For tremor, pain
Gamma Knife: Non-invasive option
Research Directions
Connectomics: Detailed thalamic wiring diagrams
Cell-type specific targeting: Optogenetic approaches
Biomarkers: Thalamic markers for neurodegeneration
Neuromodulation: Closed-loop DBS systems
Background
The study of Thalamus has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Unknown, Sherman SM, Guillery RW. Functional Connections of the Thalamus. Oxford University Press, 2013 (2013)
Unknown, Jones EG. The Thalamus. Cambridge University Press, 2007 (2007)
[Steriade M, et al., (1997). Thalamocortical Oscillations in the Sleeping and Aroused Brain. Science. 262(5134):679-685 (1997)](https://pubmed.ncbi.nlm.nih.gov/9287224/)
[Hwang K, et al., (2017). The Thalamus and Brain Connectivity. Nat Rev Neurosci. 18(5):279-296 (2017)](https://pubmed.ncbi.nlm.nih.gov/28345536/)
[Vuilleumier P, et al., (2001). Thalamic Lesions and Cognitive Deficits. Brain. 124(Pt 9):1733-1752 (2001)](https://pubmed.ncbi.nlm.nih.gov/11522582/)
[Unknown, Sherman SM. (2016). Thalamus Plays a Dual Role in Cortical Function. Nat Rev Neurosci. 17(12):748-758 (2016)](https://pubmed.ncbi.nlm.nih.gov/27710956/)
[Halassa MM, et al., (2014). Thalamocortical Inhibition and Excitation. Nat Neurosci. 17(11):1648-1658 (2014)](https://pubmed.ncbi.nlm.nih.gov/25420685/)