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A neural pathway connects one part of the nervous system to another using bundles of axons called tracts. The optic tract that extends from the optic nerve is an example of a neural pathway because it connects the eye to the brain; additional pathways within the brain connect to the visual cortex.
Thus the emerging perspective within neuropsychology and neurophysiology is that, whilst a two-systems framework was a necessary advance to stimulate study of the highly complex and differentiated functions of the two neural pathways; the reality is more likely to involve considerable interaction between vision-for-action and vision-for-perception.
Vision for perception and vision for action in neuroscience literature refers to two types of visual processing in the brain: visual processing to obtain information about the features of objects such as color, size, shape (vision for perception) versus processing needed to guide movements such as catching a baseball (vision for action).
The pathway helps to connect parts of the brain or nervous system that are distant, and are typically known and seen as white matter. In the vision pathway, visual information leaves the eye with the help of the optic nerve. Axons partially cross in the middle of the optic chiasm.
The main goal of visual neuroscience is to understand how neural activity results in visual perception, as well as behaviors dependent on vision. In the past, visual neuroscience has focused primarily on how the brain (and in particular the visual cortex ) responds to light rays projected from static images and onto the retina . [ 1 ]
Neural circuits and neuron firing is more easily observable in fruit flies through functional brain imaging, as neuronal pathways are simplified and, therefore, are easier to follow. These pathways may be simple, but by understanding the basis of neuron firing, this can lead to important studies on a human’s neuronal pathway and eventually to ...
This pathway is the most direct way for transmitting visual information to the brain. There are three primary types of photoreceptors: Cones are photoreceptors that respond significantly to color . In humans the three different types of cones correspond with a primary response to short wavelength (blue), medium wavelength (green), and long ...
Neural pathway of the vestibular system. The vestibular nuclei on either side of the brainstem exchange signals regarding movement and body position. These signals are sent down the following projection pathways. To the cerebellum. Signals sent to the cerebellum are relayed back as muscle movements of the head, eyes, and posture.