medial dorsal nucleus TA of thalamus

(redirected from mediodorsal nucleus)

me·di·al dorsal nu·cle·us [TA] of thal·a·mus

a large, composite cell group in the dorsomedial region of the thalamus having reciprocal connections with the entire extent of the frontal cortex anterior to the motor cortex (Brodmann area 4) and premotor cortex (Brodmann area 6). The afferent connections of the medial dorsal nucleus also include projections from the olfactory cortex and amygdala. Composed of a pars parvocellularis lateralis [TA] (lateral nucleus [TA] or parvocellular nucleus [TAalt]), a pars magnocellularis medialis [TA] (medial nucleus [TA] or magnocellular nucleus [TAalt]), and a pars paralaminaris [TA] (paralaminar part [TA] or pars laminaris [TAalt]).
References in periodicals archive ?
A similar pattern was found in mediodorsal nucleus of the thalamus, which was assumed to be the main nucleus with thalamocortical projections to the prefrontal cortex, although the prefrontal cortex is also connected to other thalamic nuclei (Uylings, Groenewegen, & Kolb, 2003).
A postmortem study of the mediodorsal nucleus of the thalamus in schizophrenia.
The study findings indicate dysfunction of the anterior thalamocortical tracts, which begin in the anterior mediodorsal nucleus of the thalamus, pass through the anterior internal capsule, and terminate in the anterior cingulate gyrus or prefrontal cortex, according to Dr.