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thalamus

Syllabification: thal·a·mus
Pronunciation: /ˈTHaləməs
 
/

Definition of thalamus in English:

noun (plural thalami /-ˌmī/)

Anatomy
Either of two masses of gray matter lying between the cerebral hemispheres on either side of the third ventricle, relaying sensory information and acting as a center for pain perception.
Example sentences
  • Peripheral injury results in anatomic and physiologic changes within the dorsal horn, sensory thalamus and cerebral cortex.
  • The sleep cycle is controlled by a complex system of neurones (messenger cells) in the brain stem, thalamus, hypothalamus, and basal forebrain.
  • By contrast, reduced activation in the mesencephalic brainstem and the thalamus was noted to be exclusively associated with mental relaxation.

Origin

late 17th century (denoting the part of the brain at which a nerve originates): via Latin from Greek thalamos.

Derivatives

thalamic

1
Pronunciation: /THəˈlamik/
adjective
Example sentences
  • An extensive accumulation of axons connecting various thalamic nuclei to practically all cortical areas is seen in fan-like array and this, in three dimensions, reflects the profusion of the thalamic radiations.
  • Computed tomography of the brain demonstrated an area of low attenuation in the left thalamic region.
  • During sustained hypoxia, increased thalamic gating may decrease respiratory sensory projections to higher centers.

Definition of thalamus in:

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Word of the day orthoepy
Pronunciation: ˈɔːθəʊɛpi
noun
the correct or accepted pronunciation of words