This is well in line with the increased tracking success in tinnitus patients compared to controls for fibers leaving auditory cortex in the direction of the amygdala and in the direction of the inferior colliculi
as reported by Crippa et al.
Some nuclei receive their predominant input from various parts of the midbrain roof, or tectum, known in mammals as the superior and inferior colliculi
. The superior colliculus, or optic tectum, relays visual information through its more superficial layers and somatosensory/multisensory information through its deeper layers, while the inferior colliculus relays auditory information.
This section type permitted observing the superior part of the mesencephalon, setting the profile of the cerebral peduncles and colliculi
* Upward gaze palsy results from compression on the pretectum and superior colliculi
Br- and Da-neurons are found in the retina, superior colliculi
, lateral geniculate nucleus and visual cortex of mouse, cat, rabbit and monkey (Clarke & Ikeda, 1985; De Valois & De Valois, 1975; Evtikhin, Polianskii, Alymkulov, & Sokolov, 2008; Jung, 1973; Pang, Gao, & Wu, 2003; Poggio, Baker, Lamarre & Sanseverino, 1969; Polianskii, Evtikhin, & Sokolov, 2005; Polianskii, Evtikhin, Sokolov, & Alymkulov, 2006; Polianskii, Alymkulov, Evtikhin, & Sokolov, 2008; Sokolov, 2003; Valberg & Seim, 2008) (See figure 1).
The osseous component of the MMOLC is the medial malleolus, which is composed of the anterior and posterior colliculi
separated by the intercollicular groove.
Structures arising from the mesencephalon are the superior and inferior colliculi
of the tectum, cerebral peduncles, optic lobes, optic tectum, tegmentum and somatic motor neurons of cranial nerves III and IV.
Cortical structures such as the medial and lateral geniculate bodies, inferior and superior colliculi
have higher glucose utilization than other structures (Siesjo, 1978).
The subcortical pathway activating the amygdala passes through the superior colliculi
and the pulvinar of the thalamus before accessing it.
The primary subcortical visual centres are the superior colliculi
, which are connected via the tectal commissures.
(3) The sign was originally described by Hitoshi et al.; it is produced as a result of high signal intensity in the tegmentum with preserved normal signal intensity in the red nuclei (eyes of the panda) and lateral portion of the pars reticulata of the substantia nigra (ears of the panda), and hypointensity of the superior colliculi
(chin of the panda).