pretectal वाक्य
उदाहरण वाक्य
मोबाइल
- The simplest " eyes ", such as those in microorganisms, do nothing but detect whether the surroundings are light or suprachiasmatic nuclei to effect circadian adjustment and to the pretectal area to control the pupillary light reflex.
- When the thalamic-pretectal region was stimulated, the toad exhibited escape responses, but when the tectum was stimulated in an area close to prey-selective neurons, the toad engaged in prey catching behavior ( Carew 2000 ).
- The five primary nuclei are : the olivary pretectal nucleus ( ON ), the nucleus of the optic tract ( NOT ), and the anterior ( NPA ), medial ( NPM ), and posterior ( NPP ) pretectal nuclei.
- The five primary nuclei are : the olivary pretectal nucleus ( ON ), the nucleus of the optic tract ( NOT ), and the anterior ( NPA ), medial ( NPM ), and posterior ( NPP ) pretectal nuclei.
- Instead, he found that the optic tectum and the thalamic-pretectal region ( in the diencephalon ) play significant roles in the analysis and interpretation of visual stimuli ( summarized in Ewert 1974, 2004; Ewert and Schwippert 2006 ).
- These and other experiments suggest that pathways, involving axons of type TH3 cells, extend from the pretectal thalamus to the tectum, suitable to modulate tectal responses to visual stimuli and to determine prey-selective properties due to inhibitory influences.
- These targets include the olivary pretectal nucleus ( a center responsible for controlling the pupil of the eye ), the LGN, and, through the retinohypothalamic tract ( RHT ), the suprachiasmatic nucleus of the hypothalamus ( the master pacemaker of circadian rhythms ).
- Furthermore, neuroanatomical experiments were carried out where the toad's thalamic-pretectal / tectal connection was lesioned and the resulting deficit noted : the prey-selective properties were abolished both in the responses of prey-selective neurons and in the prey catching behavior.
- As explained above, the optic tectum is responsible for the orienting and snapping responses in prey-catching behavior; however, Ewert's research also revealed that focal electrical stimulation of the thalamic and pretectal brain regions evoked different kinds of avoidance behaviors in the toad.
- IC receives inputs not shown, including visual ( pretectal area : moves eyes to sound . superior colliculus : orientation and behavior toward objects, as well as eye movements ( saccade ) ) areas, Pons ( superior cerebellar peduncle : thalamus to cerebellum connection / hear sound and learn behavioral response ), spinal cord ( periaqueductal grey : hear sound and instinctually move ), and thalamus.
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