3.11 Visual Sensation & Perception

What is sensation?

• The process of our sensory organs receiving information from the environment and then sending it to the relevant parts of the brain

• The process of our brain organizing and interpreting sensory information

• The process of converting visual light energy into electrochemical energy

• The process of detecting visual stimuli

What are photoreceptors?

• Specialized nerve cells that detect visual stimuli

• Cells in the optic nerve that respond to lines of a certain length, angle, or direction

• Neurons that transmit visual information from the eyes to the occipital lobes of the brain

• Cells responsible for providing clear color vision

What is transduction?

• The process of our sensory organs receiving information from the environment and then sending it to the relevant parts of the brain

• The process of converting visual light energy into electrochemical energy

• The process of our brain organizing and interpreting sensory information

• The process of detecting visual stimuli

What are rods?

• Photoreceptors providing peripheral vision in black and white

• Photoreceptors providing clear vision in color

• Cells in the optic nerve that respond to lines of a certain length, angle, or direction

• Neurons that transmit visual information from the eyes to the occipital lobes of the brain

What is the function of cones?

• Providing peripheral vision in black and white

• Providing clear vision in color

• Converting visual light energy into electrochemical energy

• Detecting visual stimuli

What is the function of rods in the retina?

• Responsible for color vision

• Responsible for peripheral vision

• Responsible for detecting visual details

• Responsible for vision in low light

How many rods are there in each eye?

• 125,000,000

• 6,500,000

• 50

• 0

What is the main characteristic of cones?

• Responsible for peripheral vision

• Responsible for vision in low light

• Responsible for detecting visual details

• Responsible for color vision

Where are cones concentrated in the retina?

• At the edges of the retina

• In the middle of the retina

• Throughout the entire retina

• They are not present in the retina

What are feature detectors?

• Cells that respond to lines of a certain length

• Cells that respond to color stimuli

• Cells that respond to sound stimuli

• Cells that respond to taste stimuli