| 释义 |
amygdala, n. Anat.|əˈmɪgdələ|
Pl. amygdalae.
[a. L. amygdala, ad. Gr. ἀµυγδάλη almond: see amygdal n.]
1. A tonsil (tonsil n. 1). Usu. in pl. Cf. amygdal n. 2 a. Now rare or Obs.
1749J. Barrow Dict. Medicum Universale, Amygdalæ, almonds. It also sometimes signifies the Tonsillæ. 1816C. Bell in J. Bell Anat. & Physiol. Human Body (ed. 4) III. iv. iii. 201 These are the tonsils or amygdalæ The amygdala is a mucous gland. 1843J. G. Wilkinson tr. Swedenborg's Animal Kingdom I. ii. 67 The amygdalæ are 2 glandular bodies of a reddish color. 1905H. Gray Anat. (ed. 16) 1050 The tonsils (amygdalæ) are two prominent bodies situated one on each side of the fauces.
2. A lobe on the underside of each hemisphere of the cerebellum; = tonsil n. 2. Now rare or Obs.
1845R. B. Todd Anat. Brain vii. 195 The cerebellum... On the inferior surface of each hemisphere the following lobes are readily distinguishable... 1. The amygdala. 1909H. Gray Anat. (ed. 17) 829 The cerebellum... The amygdalæ, or tonsils are rounded masses, situated in the lateral hemispheres. 1946W. E. Le Gros Clark Pract. Anat. 278 Close to the side of the medulla is a well-defined oval lobule of the cerebellar hemisphere called the amygdala or tonsil.
3. One of the basal ganglia in each cerebral hemisphere, situated towards the front of the temporal lobe and concerned with the control of motivation and aggression.
1889Cent. Dict., Amygdala..a small mass of gray matter in front of the end of the descending cornu of the lateral ventricle of the brain. 1899F. H. Gerrish Text-bk. Anat. 526 The Amygdaloid nucleus, this ganglion, otherwise called amygdala, is a mass at the tip of the temporal lobe. 1947H. C. Elliot Textbk. Nervous Syst. xviii. 225/1 The formation of the temporal lobe has..been explained... The amygdala and hippocampal formation lie in this region. 1976Smythies & Corbett Psychiatry iv. 40 Small tumors or other irritative lesions of the amygdala can cause violent and aggressive disorders of behavior. 1991Lancet 2 Mar. 559/1 Pathological changes in AD [sc. Alzheimer's disease] and ageing are mainly in structures related anatomically to the olfactory system, such as the amygdala and entorhinal cortex. |