Question

Discuss the sensory neurons for vision. What are the two

Answer 1

Answer:

Olfactory sensory neurons (OSN).

Explanation:

Olfactory sensory neurons (OSN) are the sensory neurons that is responsible for vision. Photoreceptors and olfactory sensory neurons (OSN) are the two types of sensory neurons for vision. Both olfactory sensory neurons (OSN) and photoreceptors is responsible for the receiving of photons and enable us to see things. The right half of the visual field will travel in the left optic tract, while on the other hand, the stimuli from the left half of the visual field will pass through the right optic tract.

Answer 2

Answer: The two types of sensory neurones are the CONES and RODS. Their functions are better outlined below

Explanation:

The CONES and RODS are the sensory neurones ( photoreceptors) of the eye which are located in the retina.

The RODS: They are extremely sensitive and can detect light of very low intensity. They also perceive light in black and white. They, therefore, play an important role in dim light.

The CONES: They function in bright light and are responsible for colour vision.

The path visual input take AFTER reaching the sensory neurons is as follows:

--> the rods and cones are stimulated

--> A pattern of electrical impulses is sent to the brain through the optic nerve which interprets it, drawing on past experience.

The brain tells us that the object is upright and gives us it's real size and distance from the eye. We, therefore, see the object as it actually is, and not as the image formed on the retina.