colliculus


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Related to colliculus: seminal colliculus

colliculus

 [kŏ-lik´u-lus] (pl. colli´culi) (L.)
1. a small elevation.
2. either of the two pairs of rounded eminences in the midbrain concerned with visual and auditory reflexes.
seminal colliculus a prominent portion of the male urethral crest, on which are the opening of the prostatic utricle and, on either side of it, the orifices of the ejaculatory ducts; called also verumontanum.

col·lic·u·lus

, pl.

col·lic·u·li

(ko-lik'yū-lŭs, -lī), [TA]
A small elevation above the surrounding parts.
[L. mound, dim. of collis, hill]

colliculus

/col·lic·u·lus/ (kah-lik´u-lus) pl. colli´culi   [L.] a small elevation.
seminal colliculus , colliculus semina´lis verumontanum; a portion of the male urethral crest on which are the openings of the prostatic utricle and the ejaculatory ducts.

col·lic·u·lus

, pl. colliculi (kŏ-lik'yū-lŭs, -lī) [TA]
A small elevation above the surrounding parts.
[L. mound, dim. of collis, hill]

col·lic·u·lus

, pl. colliculi (kŏ-lik'yū-lŭs, -lī) [TA]
Small elevation above surrounding parts.
[L. mound, dim. of collis, hill]

colliculus

pl. colliculi; a small elevation.

caudal colliculus
see midbrain colliculus (below).
midbrain colliculus
there are four colliculi in the tectum of the midbrain, two caudal (inferior) and two rostral (superior) containing the visual and auditory reflex centers. Called also corpora quadrigemina.
seminal colliculus, colliculus seminalis
a prominent portion of the male urethral crest, on either side of which, depending on the species, are the openings of the vasa deferens or ejaculatory ducts; called also verumontanum.
superior colliculus
see midbrain colliculus (above).
References in periodicals archive ?
Finally, on this profile, the distance from the most anterior point of the anterior colliculus to the center of the intercollicular groove (line EF) was obtained.
The superior colliculus and lateral geniculate body constitutes the intracranial visual relay centers.
Conditioned antinociception and freezing using electrical stimulation of the dorsal periaqueductal gray or inferior colliculus as unconditioned stimulus are differentially regulated by 5HT2A receptors in rats.
According to studies on afferent superior colliculus (SC) pathways in the brain, the direct path from the retina to V1 cortex is responsible for spatial and temporal processing and the indirect pathway via the retina--SC--V1 cell is mainly responsible for spatial and motion direction (orientation) and color processing [38].
About 90% of the output from the retina flows to the LGN and then to V1, whereas the remaining 10% is projected to the superior colliculus and then to the pulvinar, reciprocally connecting with the extrastriate areas surrounding the primary visual cortex (Tong, 2003).
Differential activations to fearful versus neutral faces were observed not only in the amygdala, but also in the pulvinar and in the superior colliculus.
The papers describe models of the auditory periphery, the cochlear nucleus, the superior olivary complex, the auditory cortex, the inferior colliculus neurons, sensorineural hearing loss, and auditory scene analysis.
It communicates this information rapidly to the visual cortex via the magnocellular layers of the lateral geniculate nucleus and to the superior colliculus for the reflex control of eye movements (Stein, 2003).
Assessment of Brightness and Color Differences by Neurons in the Superior Colliculus of the Rabbit.
En la persona mayor con demencia tipo Alzheimer, en quien se evidencia claramente el deterioro cognitivo, realizar una estimulacion sensorial activa estructuras como el colliculus superior mamilar, participe en la funcion de orientacion y en los comportamientos atencionales (9); el talamo, encargado de recibir la informacion sensorial y motora, interviniente en los estados de alerta y conciencia, en la conducta afectiva y en la memoria; es, por excelencia, el centro de la integracion sensorial; igualmente, se activa el sistema limbico, que, por su parte, tiene funciones somatosensoriales y somatomotoras, asi como participacion en la conducta, la memoria y la motivacion (10).
The anterior colliculus is the narrower and most distal portion of the medial malleolus and serves as the origin of the superficial deltoid ligaments.
PC] receives input from the superior colliculus, and other midbrain structures and projects to dorsal and lateral areas of the prefrontal cortex.