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Chapter 1 - notes

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Course

Sensation And Perception (PSYC 315)

11 Documents
Students shared 11 documents in this course
Academic year: 2021/2022
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Millersville University of Pennsylvania

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chapter 1 1

chapter 1

Created

Class Psyc 315

Type Reading

Reviewed

Intro to Perception

The Perceptual Process

We picture this journey from stimuli to response through the seven steps call the Perceptual Process. The perceptual process does not always unfold in a one-follows- the-other order.

Stimuli (Steps 1 & 2)

We being with the environmental stimulus which is step one. Step two is light being reflected off of the stimuli and is transformed. This process is known as the principle of transformation. The Principle of Transformation states that the stimuli and the responses created by stimuli are transformed, changed, between the environment stimulus, and perception. When this reflected light reached the eye, it is transformed as it is focused by the eye’s optical system, which is the cornea at the front of the eye and the lens directly behind it. They form a sharp image of the tree on the receptors of the persons retina. The fact that an image of a tree is focused on the retina introduces another principle of perception, the principle of representation. the principle of representation states that everything a person perceives is based not on direct contact with stimuli but on representations of stimuli that are formed on the receptors and an activity in the person's nervous system.

Receptor Processes/Transduction (Step 3)

@September 12, 2022 7:14 PM

chapter 1 2

Sensory receptors are cells specialized to respond to environmental energy, with each sensory system’s receptors specialized to respond to a specific type of energy. When the visual receptors that line the back of the eyes receive the light reflected from the tree, they do two things: 1, they transform environmental energy into electrical energy; 2, they shape perception by the way they respond to stimuli Visual Pigment: a light-sensitive chemical

Neural Processing (Step 4)

Once transduction occurs, the tree is represented by electrical signals in thousands of visual receptors, and these signals enter a vast interconnected network of neurons, first in the retina, then out the back of your eye, and then in the brain. This complex network of neurons: 1, transmits signals from the receptors, through the retina, to the brain and then within the brain, 2, changes(nor processes) these signals as they are transmitted. This maze of neurons is called neuronal processing. The main point is that processing continues the process of transformation that began when the tree was transformed into a small image inside the eye, which was then transformed into electrical signals in the visual receptors. A similar process of transduction followed by transmission occurs for other senses as well. Electrical signals from each sense arrive at the primary receiving area for that sense in the cerebral cortex of the brain. The primary receiving area for vision occupies most of the occipital lobe: the area for hearing is located in part of the temporal lobe; and the area for the skin senses-touch, temperature, and pain- is located in an area in the parietal lobe. The frontal lobe receives signals from all of the senses and it plays an important role in perceptions that involve the coordination of information received through two or more senses. The changes that occur as the signals are transmitted and processed are crucial for achieving the next step in the perceptual process, the behavioral responses.

Behavioral Responses (Steps 5-7)

The person perceives the tree (step 5) and receives it (step 6). We can distinguish between perception, which is conscious awareness of the tree, and recognition, which is placing an object in a category, such as “tree”, that gives it meaning.

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Chapter 1 - notes

Course: Sensation And Perception (PSYC 315)

11 Documents
Students shared 11 documents in this course

University: Millersville University of Pennsylvania

Was this document helpful?
chapter 1 1
chapter 1
Created
Class Psyc 315
Type Reading
Reviewed
Intro to Perception
The Perceptual Process
We picture this journey from stimuli to response through the seven steps call the
Perceptual Process. The perceptual process does not always unfold in a one-follows-
the-other order.
Stimuli (Steps 1 & 2)
We being with the environmental stimulus which is step one. Step two is light being
reflected off of the stimuli and is transformed.
This process is known as the principle of transformation. The Principle of
Transformation states that the stimuli and the responses created by stimuli are
transformed, changed, between the environment stimulus, and perception.
When this reflected light reached the eye, it is transformed as it is focused by the eye’s
optical system, which is the cornea at the front of the eye and the lens directly behind it.
They form a sharp image of the tree on the receptors of the persons retina.
The fact that an image of a tree is focused on the retina introduces another principle of
perception, the principle of representation. the principle of representation states that
everything a person perceives is based not on direct contact with stimuli but on
representations of stimuli that are formed on the receptors and an activity in the
person's nervous system.
Receptor Processes/Transduction (Step 3)
@September 12, 2022 7:14 PM

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