Identify and name the following: Area of critical focusing and discriminatory vision.
Identify and name the following:
Area of critical focusing and discriminatory vision.
Impulse Through Optic Nerve
The impulse flows from the optic nerve to the central nervous system where the reception of the visual impulse takes place. The visual impulse is a sensory character which is specific for the type of nerve that is present. The impulse flows through the nerve directly to the lobe where the visual reception takes place. The generation of a signal results in understanding the vision.
Answer and Explanation: 1
An area of critical focusing and discriminatory vision is the fovea centralis.
Fovea centralis is the region which is considered as the blind spot of the eye. This is because the region is composed of very closely related cone cells that are present in a central part of a pit. That pit is formed in the retina as the optic nerves that carry the visual impulse originate from that region. This is the importance of fovea centralis because the vision in the region is precise and discriminatory which offers critical level of focusing.
Learn more about this topic:
fromChapter 12 / Lesson 14
Learn what the fovea centralis is. Read about the macula definition, learn the fovea centralis's function and location, and see ocular diagrams for understanding.