superior colliculus


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Noun1.superior colliculus - an essential visual center between the retina and the striate cortex
nerve center, nerve centre, center, centre - a cluster of nerve cells governing a specific bodily process; "in most people the speech center is in the left hemisphere"
mesencephalon, midbrain - the middle portion of the brain
References in periodicals archive ?
The oculomotor nucleus originates at the level of the superior colliculus. It innervates skeletal muscle of the levator palpebrae superioris and all of the extrinsic muscles, except the superior oblique and lateral rectus.
A) For T1, Pr[P.sup.D] predominated in cerebral cortex (C), thalamus (T), superior colliculus (SC), lateral geniculate nucleus (LG), and substantia nigra (SN).
A recently published postmortem study [22] showed DLB cases had reduced neuronal density in the intermediate gray layer of the superior colliculus tissue, a structure important for directing attention toward visual targets.
In addition, Nothnagel reported symptoms of ipsilateral or bilateral oculomotor paresis and contralateral cerebellar ataxia due to a lesion in ventral side of the midbrain including the superior colliculus [4].
Additionally, RGC are trophically dependent on BDNF with BDNF strongly expressed in the superior colliculus [63, 64] and transported retrogradely by RGC axons to ganglion cell bodies in the retina during both development and into adult life [65-69].
Multisensory Versus Unisensory Integration: Contrasting Modes in the Superior Colliculus. J Neurophysiol 97: 3193-3205, 2007.
To our knowledge, the oculomotor nuclear is situated at the superior colliculus level of the midbrain, which is composed of two parts: the main motor nucleus and the accessory parasympathetic nucleus.
Consequently it is more prone to modulatory influences of suprasegmental structures, like specifically the superior colliculus, raphe nucleus, and basal ganglia (7,8).
For instance, within the superior colliculus (SC) -- a midbrain area that initiates eye movements to peripheral stimuli directly based on input from the eyes -, much more neural tissue is dedicated to processing foveal signals than to processing peripheral signals.
The neural correlate of saccade adaptation is thought to be either the superior colliculus (SC) or the cerebellum (reviewed in [12]).

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