Question

50 POINTS!!!

Answer 1

Answer:

In the human visual system, the eye receives physical stimuli in the form of light and sends those stimuli as electrical signals to the brain, which interprets the signals as images. This process is also greatly influenced by perception and sensation. Perception is the sensory experience of the world which involves recognizing and environmental stimuli and action sin response to these stimuli. Through this process, we gain information about the properties and elements of the environment that are critical to our survival. Sensation is any concrete, conscious experience resulting from stimulation of a specific sense organ, sensory nerve, or sensory area in the brain. These two processes work closely with our vision and have many individual terms that go along with them. Rods and cones play an important role in perception. Rods perceive color, and cones perceive shadows in images. Lens also work into perception because they help refract light to be focused on the retina. The visual association cortex is a part of the brain in the cerebral cortex which processes visual information. Monocular cues are all the ways that a single eye helps you see and process what you're looking at. Monocular cues play a huge role in how you perceive the world around you. Gestalt theorists have been incredibly influential in the areas of sensation and perception. Gestalt principles such as figure-ground relationship, grouping by proximity or similarity, the law of good continuation, and closure are all used to help explain how we organize sensory information. This is how sensation and perception work within the process of vision.

Explanation:

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Answer 2

Answer:

- Without it, all our higher order cognition (learning, memory, decision-making, social interaction) would not be possible!

- If we didn't have senses we wouldn't be able to make decisions/ have knowledge

- It's adaptive!

- ex. locating - through adaptation it's been very important

- Differences in sensation and perception mean differences in experience, and thus behaviour.

- ex. Bat- sound waves bounce off objects and back to them - they sense through smell.

- Sometime's our senses trick us....

Explanation:

David Hubel and Torsten Wiesel - interested in how we perceive shape and form.

- used cat subjects

- found cells in V1 respond to slits of light of a specific orientation.

- some cells in the visual cortex, simple cells, display "yes-no" responses to slits of a specific orientation, but those slits need to be in a specific location.

Complex cells are also orientation specific, but their responses are less restricted to one location. This makes complex cells more advanced than simple cells

- Detect lines and edges

Receptor cells in the retina allowing us to see in colour.

- Different types of cells contain photopigments - chemicals that change following exposure to light.

-contain chromophore photopigments,

* 3 different kinds:

L: sensitive to long (red) wavelengths of light

M - sensitive to medium (green) wavelengths of light

* S - sensitive to short (blue) wavelengths of light

- Densely packed in the fovea

- Cones are responsible for our ability to see fine detail