Definitions for superior colliculus
su·pe·ri·or col·licu·lus

Princeton's WordNetRate this definition:0.0 / 0 votes

1. superior colliculusnoun

   an essential visual center between the retina and the striate cortex

WiktionaryRate this definition:0.0 / 0 votes

1. superior colliculusnoun

   A structure on the tectum that receives neural projections directly from the retina.

2. superior colliculusnoun

   The primary area of the brain thought to be involved in saccadic eye movements.

3. superior colliculusnoun

   The area of the brain thought to be involved in hand-eye coordination.

WikipediaRate this definition:0.0 / 0 votes

1. Superior colliculus

   In neuroanatomy, the superior colliculus (from Latin 'upper hill') is a structure lying on the roof of the mammalian midbrain. In non-mammalian vertebrates, the homologous structure is known as the optic tectum, or optic lobe. The adjective form tectal is commonly used for both structures. In mammals, the superior colliculus forms a major component of the midbrain. It is a paired structure and together with the paired inferior colliculi forms the corpora quadrigemina. The superior colliculus is a layered structure, with a pattern that is similar to all mammals. The layers can be grouped into the superficial layers (stratum opticum and above) and the deeper remaining layers. Neurons in the superficial layers receive direct input from the retina and respond almost exclusively to visual stimuli. Many neurons in the deeper layers also respond to other modalities, and some respond to stimuli in multiple modalities. The deeper layers also contain a population of motor-related neurons, capable of activating eye movements as well as other responses. In other vertebrates the number of layers in the homologous optic tectum varies.The general function of the tectal system is to direct behavioral responses toward specific points in body-centered space. Each layer contains a topographic map of the surrounding world in retinotopic coordinates, and activation of neurons at a particular point in the map evokes a response directed toward the corresponding point in space. In primates, the superior colliculus has been studied mainly with respect to its role in directing eye movements. Visual input from the retina, or "command" input from the cerebral cortex, create a "bump" of activity in the tectal map, which, if strong enough, induces a saccadic eye movement. Even in primates, however, the superior colliculus is also involved in generating spatially directed head turns, arm-reaching movements, and shifts in attention that do not involve any overt movements. In other species, the superior colliculus is involved in a wide range of responses, including whole-body turns in walking rats. In mammals, and especially primates, the massive expansion of the cerebral cortex reduces the superior colliculus to a much smaller fraction of the whole brain. It remains nonetheless important in terms of function as the primary integrating center for eye movements. In non-mammalian species the optic tectum is involved in many responses including swimming in fish, flying in birds, tongue-strikes toward prey in frogs, and fang-strikes in snakes. In some species, including fish and birds, the optic tectum, also known as the optic lobe, is one of the largest components of the brain. Note on terminology: This article follows terminology established in the literature, using the term "superior colliculus" when discussing mammals and "optic tectum" when discussing either specific non-mammalian species or vertebrates in general.

ChatGPTRate this definition:0.0 / 0 votes

1. superior colliculus

   The superior colliculus is a paired structure of the mammalian midbrain involved in visual processing and orienting movements of the head and eyes. It is one of the primary centers for the control of eye movements in the brain, particularly saccadic eye movements, which are rapid shifts of the eyes from one point to another. This area also plays a role in sensory integration, helping to combine and interpret sensory information from different modalities.

WikidataRate this definition:0.0 / 0 votes

1. Superior colliculus

   The optic tectum or simply tectum is a paired structure that forms a major component of the vertebrate midbrain. In mammals, this structure is more commonly called the superior colliculus, but, even in mammals, the adjective tectal is commonly used. The tectum is a layered structure, with a number of layers that vary by species. The superficial layers are sensory-related, and receive input from the eyes as well as other sensory systems. The deep layers are motor-related, capable of activating eye movements as well as other responses. There are also intermediate layers, with multi-sensory cells and motor properties. The general function of the tectal system is to direct behavioral responses toward specific points in egocentric space. Each layer of the tectum contains a topographic map of the surrounding world in retinotopic coordinates, and activation of neurons at a particular point in the map evokes a response directed toward the corresponding point in space. In primates, the tectum has been studied mainly with respect to its role in directing eye movements. Visual input from the retina, or "command" input from the cerebral cortex, create a "bump" of activity in the tectal map, which, if strong enough, induces a saccadic eye movement. Even in primates, however, the tectum is also involved in generating spatially directed head turns, arm-reaching movements, and shifts in attention that do not involve any overt movements. In other species, the tectum is involved in a wide range of responses, including whole-body turns in walking rats, swimming fishes, or flying birds; tongue-strikes toward prey in frogs; fang-strikes in snakes; etc.

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How to pronounce superior colliculus?

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Numerology

1. Chaldean Numerology

   The numerical value of superior colliculus in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of superior colliculus in Pythagorean Numerology is: 5

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=superior colliculus
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Superior_Colliculus
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Superior_Colliculus
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=superior colliculus