Dorsal

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Dorsal Thalamus

• Medical Neuroscience
• Dr. Wiegand

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The Diencephalon
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The Diencephalon
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The Dorsal Thalamus

• Sensory integration nucleus gateway to the
  cerebral cortex
• Afferents from both rostral and caudal central
  nervous system structures
• Efferents primarily to cerebral cortex via four
  principal radiations
• Associated with motor, sensory, limbic and
  vegetative functions

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General Organization
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Frontal Section
intralaminar nuclei
reticular nuclei
3rd Ventricle
externalmedullary lamina
internalmedullary lamina
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Thalamic Nuclei

• Anterior
• Lateral
• Dorsal Tier
• lateral dorsal
• lateral posterior
• pulvinar
• Ventral Tier
• ventral anterior
• ventral lateral
• ventral posterior (VLP VPM)
• posterior nucleus

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Thalamic Nuclei

• Medial
• medial/medial dorsal
• midline nuclei
• Pulvinar
• Geniculate bodies
• Reticular
• Intralaminar
• centromedian
• parafasciular

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Specific Sensory Nuclei
afferent nucleus efferent function
Dorsal Column Anterolateral System VPL Postcentral Gyrus Somesthesis
Trigeminal System VPM Postcentral Gyrus Somesthesis
Inferior Colliculus MGB Temporal lobe Hearing
Retina LGB Occipital lobe Vision
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Specific Cortical Relay Nuclei
afferent nucleus efferent function
Cerebellum VL Precentral Gyrus Frontal cortex Movement Motor Planning
Globus Pallidus VA Premotor Cortex Motor Planning
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Specific Association Nuclei
afferent nucleus efferent function
Hypothalamus Anterior Cingulate Limbic
Amygdala MD Prefrontal Cortex Limbic
Hypothalamus Cingulate LD Cingulate Emotions
Parietal lobe Sup.Colliculus LP Parietal Cortex Sensory integration
Anterolateral System Posterior Insula, Cingulate and Association Cortices Pain
Sup. Colliculus Pulvinar Temporal, Parietal and Occipital Lobes Vision
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Non-Specific Nuclei
afferent nucleus efferent function
Reticular Formation Midline Entire Cortex Arousal/Limbic
Motor / Premotor Basal Ganglia Reticular Formation Intra-laminar Striatum Cortex Motor Integration
Cortex Brainstem Reticular Thalamus Thalamic Modulation
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