Where is cortical magnification located?
In the center of the visual field, corresponding to the center of the fovea of the retina, a very large number of neurons process information from a small region of the visual field.
What does cortical magnification factor refer to?
Definition. Cortical magnification refers to the fact that the number of neurons in the visual cortex responsible for processing the visual stimulus of a given size varies as a function of the location of the stimulus in the visual field.
What is the cortical region for Vision located?
occipital lobe
The primary visual cortex is found in the occipital lobe in both cerebral hemispheres. It surrounds and extends into a deep sulcus called the calcarine sulcus.
Where is the visual association area located?
visual cortex the area of the occipital lobe of the cerebral cortex concerned with vision; the striate cortex is also called the first visual area, and the adjacent second and third visual areas serve as its association areas.
Where is the motor homunculus located?
precentral gyrus
The motor homunculus is a topographic representation of the body parts and its correspondents along the precentral gyrus of the frontal lobe.
What is cortical magnification quizlet?
Cortical magnification. Occurs when a disproportionately large area on the cortex is activated by stimulation of a small area on the receptor surface. One example of cortical magnification is the relatively large area of visual cortex that is activated by stimulation of the fovea.
What is cortical magnification in the somatosensory system?
There is a relative magnification of the amount of cortical area devoted to body parts with the highest tactile acuity and sensory specialization (Fig. 2).
Where is the Broca’s area located?
frontal cortex
New research shows that Broca’s area, located in the frontal cortex and shown here in color, plans the process of speech by interacting with the temporal cortex, where sensory information is processed, and the motor cortex, which controls movements of the mouth.
What is a homunculus map?
A homunculus is a topographical-organized map of the proportional representation of the contralateral somatosensory or motor neurons on the cortex or passing though a part of the brain. The maps are often comical, as the body parts are disproportionally represented compared to their physical size.
Which of the following is an example of cortical magnification?
One example of cortical magnification is the relatively large area of visual cortex that is activated by stimulation of the fovea. An example in the somatosensory system is the large area of somatosensory cortex activated by stimulation of the lips and fingers.