New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Psychology 1010 9/27-9/29

by: Farreh Sears

Psychology 1010 9/27-9/29 PSY 1010

Marketplace > Wayne State University > Psychology (PSYC) > PSY 1010 > Psychology 1010 9 27 9 29
Farreh Sears

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

These are a combo of lecture and the book.
Intro Psychology
Andrew Tenbrink
Class Notes
psy 1010
25 ?




Popular in Intro Psychology

Popular in Psychology (PSYC)

This 8 page Class Notes was uploaded by Farreh Sears on Friday September 30, 2016. The Class Notes belongs to PSY 1010 at Wayne State University taught by Andrew Tenbrink in Fall 2016. Since its upload, it has received 6 views. For similar materials see Intro Psychology in Psychology (PSYC) at Wayne State University.

Similar to PSY 1010 at WSU

Popular in Psychology (PSYC)


Reviews for Psychology 1010 9/27-9/29


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/30/16
Lecture 7­8 sensation and perceptions 9/27­9/29 Vocabulary: Absolute threshold: The minimum intensity needed to just barely detect a  stimulus 50% if the time. Accommodation: the process by which the eye maintains a clear image on the retina. Blind spot: a location in the visual field that produces no sensation on the  setina Cones: operating under normal conditions, this is a cell that detects color Fovea: Area of the retina where vision is clearest, there are no rods at all. Perception: Activity in the brain that organizes, identifies, and interoperates  sensations to form. Psychometric function: subjective responses vs. stimulus intensity. Psychophysics: The methods that measures the strength of a stimulus and the  observer’s sensitivity to that stimulus. Retina: light sensitive tissues lining the back of the eye ball. Rods: become active under low­light conditions Sensation: The stimulation of a sense organ  Signal Detection Theory: The response to a stimulus depends on a person’s  sensitivity to the stimulus and their decision criterion. Transduction: Senses in the body convert physical signals form the  environment into encoded neuro signals sent to the nervous system. Visual acuity: the ability to see fine details Weber’s law: The just noticeable differences of a stimulus is a consistent  proportion despite variations in intensity. The distinct activities of sensation and perception. (detecting and  knowing) Sensation­ A sensing process.  It is the basic registration of light, sound, pressure, odor, or taste as  parts of your body interact with the physical world.  o Vision  About half of your cortex is devoted to this o Auditory o Touch  o Taste o Smell  o After a sensation registers in your central nervous system,  Perception­ applies a meaning to a sensation.  takes place in your brain: the organization, identification, and  interpretation of a sensation in order to form a mental  representation. Sensation and perception are related—but distinct —activities. Fire walking­ Is the ability to walk across hot coal one that arises from  sensation or perception? Sensation, some materials conduct heat better than  others. Coal is a bad transmitter of heat. Psychophysics­ do you ever wonder if two people see the same colors in the  sky?  the earliest psychology 2  Asked if the brain follows the natural physical laws.  Focused on how the brain turns a stimulus into a perception of  the stimulus. o The rules the brain follows.  In a typical psychophysics experiment, researchers ask people to  make a simple judgment The “Black box” characterization  A replacement for the mind. When you feed something in, something  comes out (though you can’t see the processes happening in the mind) o Independent variable­ manipulate physical stimulus o Dependent variable­ perception  Determines the “laws” in which information is transformed into  perception/ a look into the brain. Threshold The mini intensity needed to just barely detect a stimulus in 50% of the trials, it is a boundary.  Absolute threshold­ When subject can detect a stimulus ½ the time.  Change threshold o JND (just noticeable difference)­ Is the minimum change is  stimuli, such as how people can tell the the difference in the cry  of a person in pain and the cry of a person that’s scared.  Now called Weber’s law  The limits of sensory systems 3 o Light experiment: Minimum of light that can be detected by  humans  Independent variable: Manipulating the amount of light a  person is seeing.  Dependent variable: asking the subject if they can see the  light or is the can not see the light.   Subjective response  Psychometric function o At what level/amount do you detect the subject?  Light experiment: some levels of light are undetectable for  people, others are hit and misses while the last is the  threshold where everyone sees light.   What causes variability? o Noise  Internal­ the sound in the brain  External – the sound in the environment o Response bias  You have to decide to report the stimulus  The subjective response can be influenced by the bias of  the observer. Bias  Habit­ the worlds on repeat o People give the same answers when they’re uncertain. 4  Cost and benefits o Perceived cost­The subject believes that there’s a cost or benefit  to making a response. o Changing the benefits or costs of a decision influences choices  made. Signal detection theory (TSD)  Measures the decision making process o Bias o Assumes information detection is a decision.  Assumes two processes: o Sensory process­ how well you can detect the noise. o Decision process­ subjective benefits  Catch trials catch habitual responses. o Yes, sayers  More false alarms o Nay sayers Vision Light and vision  Visual acuity o The typical person can see around 20/20 vision, however, animals such as hawks and owls have eight times that ability. 5  Action shooter games are proven by research to improve attention and basic visual acuity.  Basic process of sensation o Reception  Detection by specialized receptors o Transduction  Conversion into a neural signal o Coding  Neural code of stimulus  Coding with action potentials o Modality: type or quality of stimulus  “law of specific nerve energies”  states which neuron is active signals modality o intensity  frequency of action potential  Sensing light- visible light is a portion of the electro magnetic spectrum that we can see. o Light is a wave of energy.  Wavelength  Electromagnetic spectrum us the sliver of light waves visible to humans as a rainbow of colors from violet-blue to red.  Acuity- high resolution at a point of focus  Everything you’re not focused on blurs  Retina- light sensitive tissues lining the back of the eyeball.  The surface is composed of photoreceptor cells.  Accommodation is how the eye maintains a clear image of the retina.  Myopia- nearsightedness  Hyperopia- farsightedness  Reception  Lens focuses images on the retina o Areas to know 6  Fovea- critical for high resolution vision  Exclusively cones  Site of most color detection  Blind spot- A common spot where there are no receptors, and no detectors. Thus there is no vision.  Photoreceptors- cones and rods o Cones-detect color, operate under normal day-light conditions, and allow focus on fine details. o Rods- become active in low-light condition/the night vision feature of your eyes.  More sensative  Receptive fields o An area that when presented with a necessary stimulus cause a cell to respond. o Receptive field for any cell=sum of inputs Color vision  Receiving color o We perceive color because objects selectively absorb some wavelengths of light and reflect others. o Color perception corresponds to three types of cones  Red (long)  Blue (short  Green (medium) o Red and blue make shades of purple o Red and green create shades of yellow o Blue and green create lighter blue/greens o All together they make white 7  In some cases, people are color deficient, in which one of the cone types is missing. (or two, but this is rare) o More common in men than women. Processing visual information  The visual brain o Action potentials containing information encoded by retina travel to the brain along the optic nerve. o Half the optic nerves that leave the eye come from the retinal ganglion cells (RGC) that code information in the right visual field while the other half codes information in the left visual field.  The nerve travels to the thalamus and then the signal is sent to the brain (area V1)  Visual form agnosia o The inability to recognize objects by sight o Caused by damage to a person’s visual representation of objects.  The dorsal and ventral visual streams are functionally distinct. o You can damage one and leave the other. 8


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.