Principal Afferent Inputs Major projection sites Function
Specific Relay Nuclei
Anterior nuclear group Mammilary body of hypothalamus Cingulate gyrus Limbic, emotion, visceral
Ventral anterior group Globus pallidus and Substantia niagra Premotor cortex -area 6 Initiate motor; resting tone
Ventral Lateral Same as VA + Dentate nucleus of cerebellum via brachium conjunctivum and Motor and Premotor Cortex Motor and Premotor Cortex: Area 6 Coordination of motor activity
Ventral Posterolateral DCML and Spinothalamic pathways Somatic sensory parietal cortex Somatic Sensation of body
Ventral Posteromedial Principle and Spinal sensory nuclei of V Somatic sensory parietal cortex Somatic sensation of face and Jaw proprioception
Medial Geniculate Inferior Colliculus via brachium of Inf Coll Auditory Cortex Ipsolateral Hearing
Lateral Geniculate Retinal ganglion cells through optic nerve and optic tract Visual Cortex (area 17) Vision
Association Nuclei
Pulvinar Superior colliculus, temporal, parietal occipital association area and primary visual cortex Temporal parietal and occipital association area Integration of sensory information
Lateral Dorsal Frontal limbic association cortex including the Cingulate Gyrus Frontal limbic association cortex including Cingulate Gyrus Emotional expression
Lateral Posterior Parietal lobe Parietal lobe Integration of Sensory information
Medial Dorsal Amygdaloid nuclear complex, olfactory cortex and hypothalamus Prefrontal association cortex or anterior frontal lobe Emotional expression normal memory function
Diffuse Projection nuclei
Reticular nucleus Ipsolateral Cerebral cortex, thalamus, brainstem Ipsolateral thalamic nuclei Inhibitory thalamic modulation
Intralaminar nuclei Reticular formation, spinothalamic tract, trigemino thalamic tract, globus pallidus Widely to cortex and basal ganglia Arousal
Midline nuclei Reticular formation, hypothalamus Basal forebrain Emotional Arousal
Centromedial nucleus Principal Afferent Inputs: Globus pallidus Caudate and Putamen Motor control