Reference work2002, Encyclopedia of the Human Brain David Lykken Explore book III.F The Eye Blink The eye blink is a component of the reflexive startle response. The startle elicited by a sudden-onset auditory stimulus is related to the subject's prestimulus emotional state. For example, a ...
The eye is an essential part of almost all vertebrates, converting light energy into a chemical signal that the brain translates into an image. In humans, the external eye is composed of a thick collagen layer, comprising the sclera (the white part of the eye that extends posteriorly) and c...
The eye is an essential part of almost all vertebrates, converting light energy into a chemical signal that the brain translates into an image. In humans, the external eye is composed of a thick collagen layer, comprising the sclera (the white part of the eye that extends posteriorly) and c...
Eye blinking is closely related to human physiology and psychology. It is an effective method of communication among people and can be used in human–machine interactions. Existing blink monitoring methods include video-oculography, electro-oculograms an
The stack of waveguides may be utilized to provide three-dimensional perception to the eye/brain by using a plurality of waveguides to direct light from an image injection device (e.g., discrete displays or output ends of a multiplexed display which pipe image information via one or more ...
b. lens c. sclera d. cornea Purpose of Color Vision: Trichromatic color vision arose in humans as a result of mutations in the opsin genes. Being able to discern between colors is a vital skill, one that likely served early humans well. For...
In Malpolon monspessulana, the nervus oculomotorius arises from the ventral side of the pars peduncularis mesencephali of the midbrain by a single root. It runs closely applied to both the nervus abducens and the ramus nasalis of the nervus trigeminus. These nerves together with the nervus...
The dorsal pons has long been known to play a key role in the generation of REM sleep. In addition, several studies have revealed that many brain regions, such as the hypothalamus, midbrain, and medulla, are also involved in REM sleep control12,13,14. The rostromedial tegmental nucleus (...
Action potentials, which are spikes of electrical discharges travelling along the cell surface, only originate in the ganglion cells, which are the first neurons in the chain that carry the visual stimuli to the brain. The following diagram illustrates the events that occur in a photoreceptor in ...
There are twelve pairs of cranial nerves, which exit the brain and directly serve the head and neck (with the exception of cranial nerve X, the vagus nerve, which innervates the abdomen). These nerves carry information from special se...