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单词 thalamus
释义

Definition of thalamus in English:

thalamus

nounPlural thalami ˈθaləməsˈθæləməs
Anatomy
  • Either of two masses of grey matter lying between the cerebral hemispheres on either side of the third ventricle, relaying sensory information and acting as a centre for pain perception.

    〔剖〕丘脑

    Example sentencesExamples
    • By contrast, reduced activation in the mesencephalic brainstem and the thalamus was noted to be exclusively associated with mental relaxation.
    • 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.
    • They note that there is evidence to suggest that a circuit involving the thalamus and frontal lobes functions abnormally in autism.
    • However, after controlling for this overall increase in metabolism in the methamphetamine abusers, the investigators showed that metabolism was significantly reduced in two brain regions - the thalamus and striatum.

Derivatives

  • thalamic

  • adjective ˈθaləmɪkθəˈlamɪk
    Anatomy
    • Computed tomography of the brain demonstrated an area of low attenuation in the left thalamic region.
      Example sentencesExamples
      • During sustained hypoxia, increased thalamic gating may decrease respiratory sensory projections to higher centers.
      • When we are asleep, thalamic neurons prevent penetration of sensory information upward to the cortex.
      • 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.
      • The authors conclude that thalamotomy and thalamic stimulation are effective treatments for patients with severe tremors.

Origin

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

Rhymes

calamus, hypothalamus

Definition of thalamus in US English:

thalamus

nounˈθæləməsˈTHaləməs
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.

    〔剖〕丘脑

    Example sentencesExamples
    • 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.
    • However, after controlling for this overall increase in metabolism in the methamphetamine abusers, the investigators showed that metabolism was significantly reduced in two brain regions - the thalamus and striatum.
    • They note that there is evidence to suggest that a circuit involving the thalamus and frontal lobes functions abnormally in autism.
    • Peripheral injury results in anatomic and physiologic changes within the dorsal horn, sensory thalamus and cerebral cortex.

Origin

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

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更新时间:2024/12/27 4:15:33