amygdala


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Related to amygdala: thalamus

amygdala

 [ah-mig´dah-lah]
1. an almond-shaped structure.

a·myg·da·la

, gen. and pl.

a·myg·da·lae

(ă-mig'dă-lă, -lē),
1. The lymphatic tonsils (pharyngeal, palatine, lingual, laryngeal, and tubal).
2. General term used for the amygdaloid body [TA], which is thought to assess and assign emotional valence to somatic, visceral, and olfactory sensory input.
[L. fr. G. amygdalē, almond; in Mediev. & Mod. L., a tonsil]

amygdala

/amyg·da·la/ (ah-mig´dah-lah)
1. almond.
2. an almond-shaped structure.

amygdala

(ə-mĭg′də-lə)
n. pl. amygda·lae (-lē)
Either of two small, almond-shaped masses of gray matter that are part of the limbic system and are located in the temporal lobes of the cerebral hemispheres. Also called amygdaloid nucleus.

amygdala

[amig′dələ]
Etymology: Gk, amygdale, almond

a·myg·da·la

, gen. and pl. amygdalae (ă-mig'dă-lă, -lē)
Denoting the cerebellar tonsil, as well as the lymphatic tonsils (pharyngeal, palatine, lingual, laryngeal, and tubal).
[L. fr. G. amygdalē, almond; in Mediev. & Mod. L., a tonsil]

amygdala

An almond-shaped brain nucleus at the front of the temporal lobe. The amygdala is concerned with memory registration.

amygdala (·migˑ·d·l),

n a key component of the limbic system in the brain, involved in the experience of anxiety, distress, and fear.

amygdala

1. the corpus amygdaloideum.
2. (rare) a tonsil.
References in periodicals archive ?
Patient 4 clinical foci were in the right amygdala (RA) and right hippocampus (RH) (Table 1) and did show increased occurrence of maximum inflow (forth row, left panel): in the right amygdala at low frequencies up to 20Hz and the right hippocampus beyond 20Hz.
Finding that neurons in the PVT region became active and communicated with the central amygdala as mice learned or recalled fear suggested that the region could be important in understanding anxiety disorders.
The connection between the PVT and the central amygdala is a potential therapeutic agent since any impairment in it causes a problem in fear-learning.
the researchers found that specific regions inside the amygdala exhibited activity tracking how untrustworthy a face appeared, and other regions inside the amygdala exhibited activity tracking the overall strength of the trustworthiness signal (whether untrustworthy or trustworthy)-even though subjects could not consciously see any of the faces.
A second analysis restricted to youths with conduct problems found similar results: Right amygdala activity was positively associated with externalizing behavior (x = 26, y = -4, z = -12; k = 47) and negatively associated with CU traits (x = 26, y = 0, z = -12; k = 1).
The amygdala long has been known to be important for the processing of emotional reactions.
The amygdala has been implicated in processing mental aspects of sexual-arousal in adults.
A role for the human amygdala in the general detection of behaviourally relevant stimuli is supported by the observation that bilateral amygdala activation is stronger in response to behaviourally relevant letter stimuli compared with letters with less behavioural relevance.
They studied two women with a rare genetic condition called Urbach-Wiethe disease, which damages the amygdala, the almond-shaped center in the brain that controls fear and certain other acute emotions.
The amygdala is an important locus of emotional processing and has comparably less direct involvement with cognitive processing.
While all 22 showed activity in the amygdala when new faces appeared, people who had been labelled shy as toddlers had a greater response in the brain region.