Neural Basis Vision
Neural Basis Vision - Related Videos
14:28
Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research
0 Views •
Cited by 14 •
2009
In this video we perform electroretinogram recording, optic nerve recording, and intraretinal recording with the American horseshoe crab, Limulus Polyphemus. These electrophysiological paradigms can be used for investigating the neural basis of vision in a research or teaching lab.
10:19
Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
0 Views •
Cited by 12 •
2011
We describe a method to record motor activity, timed to the electrically recorded tarsal contact signal in a tethered insect, walking on a slippery surface. This is used to study the neural basis of adaptive behavior under reduced influence of mechanical interaction between legs through the substrate.
01:24
Vision
0 Views •
2019
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed. Light is absorbed by the rod and cone...
09:29
A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
0 Views •
Cited by 27 •
2014
We describe an indoor, portable, standardized course that can be used to evaluate obstacle avoidance in persons who have ultralow vision. The course is relatively inexpensive, simple to administer, and has been shown to be reliable and reproducible.
08:25
A Battery of Quantitative Binocular Vision Tests for Adults: Testing Protocols
0 Views •
2026
Here we present a comprehensive battery of tasks to assess binocular vision. Tasks include peripheral stereoacuity and motion-in-depth, which are not assessed by current clinical tests. Incorporating these tasks will provide an in-depth assessment of an individual’s binocularity.
FAQs
Phototransduction is the first signal-conversion step in visual processing. When light reaches retinal photoreceptors, it is converted into electrical activity rather than remaining a purely physical stimulus. That activity can then enter retinal circuits and continue through the optic nerve, making phototransduction essential for connecting incoming light with later neural representation and perception.
Retinal circuits organize and transmit the electrical signals generated by photoreceptors. Their activity forms an intermediate stage between light detection and communication with the brain through the optic nerve. This organization matters because visual information must be processed before reaching visual regions, where the nervous system can support representations related to form, color, motion, and depth.
Visual processing extends beyond detecting light because retinal activity becomes linked with visual regions of the brain and, ultimately, with cognition and behavior. This connection allows visual signals to contribute to how an organism responds to its surroundings. Studying the pathway therefore addresses both neural activity and the broader consequences of visual perception.
The visual system supports distinct aspects of visual representation, including color, form, motion, and depth. These perceptual features emerge as signals move from retinal activity through the optic nerve to visual regions such as the visual cortex. Examining these representations helps biology relate specific stages of neural processing to recognizable components of visual experience.
A pathway-focused investigation follows visual information from photoreceptor activation through retinal circuits and the optic nerve to visual regions of the brain. Researchers can then relate this sequence to visual representations, behavior, and cognition. This approach provides a biological framework for interpreting how activity at different stages contributes to visual function and perception.
Mapping the pathway helps identify how disrupted visual processing may affect perception or behavior. Because visual signals pass through the retina, optic nerve, and brain regions involved in vision, examining these stages provides context for understanding visual disorders and neurological damage. The same framework can guide interpretation of where visual function may be compromised.
Knowledge of the visual pathway supports the development of retinal prostheses and other vision-restoration strategies. These approaches are informed by the relationship between retinal activity and downstream visual regions rather than by light detection alone. Understanding that pathway helps researchers consider how restored signals might reconnect with neural processing involved in visual perception.