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From the 1970s to 1990s, however, neural recordings from mammals, mostly monkeys, focused primarily on the role of the superior colliculus in controlling eye movements. This line of investigation came to dominate the literature to such a degree that the majority opinion was that eye-movement control is the only important function in mammals, a ...
The superior colliculus’s role in directing eye movements is especially well-studied: multiple lines of evidence show that artificially blocking and increasing superior colliculus activity modulates (inhibits and biases, respectively) eye saccades to the affected side. [8]
contralateral frontal eye field of the middle frontal gyrus of the frontal lobe (via frontopontine fibers [6] The frontal eye field meanwhile receives afferents from the visual cortex. [7] superior colliculus [6] vestibular nuclei [6] other parts of the reticular formation. [6]
The frontal eye field is reported to be activated during the initiation of eye movements, such as voluntary saccades [5] and pursuit eye movements. [6] There is also evidence that it plays a role in purely sensory processing and that it belongs to a “fast brain” system through a superior colliculus – medial dorsal nucleus – FEF ...
An eye movement shifts the orientation of the coil to induce an electric current, which is translated into horizontal and vertical eye position. The second technique is an eye tracker . This device, while somewhat more noisy, is non-invasive and is often used in human psychophysics and recently also in instructional psychology.
Trace of saccades of the human eye on a face while scanning Saccades during observation of a picture on a computer screen. In vision science, a saccade (/ s ə ˈ k ɑː d / sə-KAHD; French:; French for 'jerk') is a quick, simultaneous movement of both eyes between two or more phases of focal points in the same direction. [1]
In humans, the tectospinal tract (or colliculospinal tract) is a decussating extrapyramidal tract that coordinates head/neck and eye movements. [1] It arises from the superior colliculus of the mesencephalic (midbrain) tectum, and projects to the cervical and upper thoracic spinal cord levels. [2] It mediates reflex turning of the head and ...
[2] [3] The SEF constitutes together with the frontal eye fields (FEF), the intraparietal sulcus (IPS), and the superior colliculus (SC) one of the most important brain areas involved in the generation and control of eye movements, particularly in the direction contralateral to their location. [2] [4] Its precise function is not yet fully known ...