When method of adjustment is used to study Muller-Lyer Illusion The mean
value is an estimate of the point of subjective equality. Also showed that
personal experience and learning do not change perception.
Difference Threshold: The smallest difference b
PSY 310 Fall 2016
1. Which of the following is true of the visual angle?
a. The visual angle can be computed by tangent of alpha which is D over H.
b. The big object in the far distance and the small object in the near distance cannot
have an ident
depth, size, shape
Monocular space constancy
Inflow and outflow theories
1. Eye moves, corresponding motion on the retina:
2. Eye does not move, motion on the retina: object
3. Eye moves (pursues
Brain and Vision
Brain areas lateral view
Different aspects of the image processed by V1,
V4 and infero-temporal (IT)
Left visual field projects to the
right hemisphere, and the right
visual field projects to the left
Split brain Gazzaniga (19
Retinal sizes are usually expressed by visual
If H=1cm, D=57cm, then =1
If the receptors are densely packed, MAR is equal to
2 times the diameter of a rec
PSY 311 Human Memory
Grimaldi and Karpicke (2012)
Voluntary and involuntary remembering
Sometimes we actually try to remember something by trying to find connections
between things that were recalling covertly
PSY 311 Human Memory
Karpicke (2012) and Roediger (2013)
Behavior analysis and education
Roediger (2013, p. 1) states, And some psychological research and ideas have
made their way into educationfor instance, comp
PSY310 Exam 2 Study Guide
Important Parts of the Brain: optic nerve, optic tract, cateral geniculate
nucleus, visual, cortical cells, superior colliculus, optic chiasm, retina
The left side of the retina in the left eye of a human observer projects to
Week 1: Intro
Perception provides the observer with vertical information of the external world
Fechners Chain of events: 1. Physical events: Distal stimulus (object) proximal
stimulus (retinal image) 2. Physiological events: transduction (in receptors)
1. Map the visual signals from entry into the eye through the brain. (up to V1)
Eye-> thalamus-> V1
2. How can one pathway explain unconscious reflexive eye movement?
The eye to midbrain pathway is unconscious because the thalamus is a relay
Exam 1 Review:
-similar to quiz
Brain can only measure what is on the retina
o We measure the visual angle
o Anatomical Model
o If the receptors are densely packed, MAR (Minimal angle of resolution)
-In signal detection, we always use feedback.
LIGHT & OPTICS (CONTINUED)
(Continuing with sources of light)
o The simplest way to produce image
o Large cardboard with small hole in it (made with a pen to produce image)
o To produ
Signal Detection Theory: Due to noise in the visual system, there is always a percept, even if
there is no physical stimulus.
In classical psychophysics, no stimulus cannot result in a percept (high threshold theory)
-Signal Detection Theory wa
Notes for January 10, 2017
Definition of Perception:
1. We perceive in order to obtain accurate information about the external world.
a. Perception is a branch of cog psych, and cog psych is related to mental
functions that control decision making, inform
Random Points from Last Time:
Percept-always an educated guess based on the retinal image that is a 2D image in the
back of the eye.
(ended on Method of Adjustment)
METHOD OF LIMITS:
AL: The subject is presented with a sequence of ascending (descending
Sensation & Perception
-Newborn chickens have depth perception (Thorndike 1899)
Depth Perception in human infants (that can already crawl) (Walk & Gibson 1960): The visual
cliff experiment. Cliff covered in strong enough glass that the baby could crawl ac
Perception of 3D Shapes and 3D Space:
The percept is closer to the 3D object than to the retinal image.
o We do not see our retinal images.
o The visual system is designed to make correct judgments about what is out there
in space rather than what is in
Week 4: The Eye & Seeing:
Retinal sizes are usually expressed by visual angles
o If H=1cm, D=57cm, then =1
o Minimal angle of resolution (MAR)
If the receptors are densely packed, MAR
Illusory contour (Kanizsa triangle)
Mental chemistry: complex percepts are built
from simple elements with the help of memory
Structural psychology has always been
Netwons contributions (1666/1704)
Color is in the mind, not in the light.
Dispersion (splitting) of sunlight.
White is a complex percept.
Color circle model for hues and saturations.
Center of gravity model of additive color
What are some situations that do and do not require attention?
-Playing a sport
-repetitive tasks such as preparing a meal that you done many times before.
Why is attentions role in perception adaptive?
-Because your perception system
1. What are the two visual pathways? Be able to label the pathways give their
locations and know their functions.
a. Ventral to temporal
i. What pathway
ii. Associated with object identification.
iii. Vision for future actions. (anticipatory)
b. Dorsal to
1.While star gazing, you might notice a star just to the side of where you are looking.
But when you turn to look at the star directly, it disappears or it is not as bright as you
though. Explain this phenomenon. Also, be sure to include where the star wi
Sensation and Perception
Instructor: Z. Pizlo
Definition of Perception
Perception is the oldest branch of
The science of human mind started with studying
perception (e.g., Alhazen, 1083) not a typo.
Light and Optics
Nature of light
Wave theory (light propagation)
Particle theory (emission and absorption)
Sources of light
Incandescent (solid and liquid raised to high
Luminescent (gas raised to high temp
Signal Detection Theory
Due to noise in the visual system, there is
always a percept, even if there is no
In classical psychophysics, no stimulus
cannot result in a percept (high threshold
Percept vs. response bias
When the m
Date: June 22, 2016
A. If your library has PsycINFO access (http:/purl.lib.purdue.edu/db/psycinfo2 ), do
a basic search for the word depression in PsycINFO and write down how many
records this search finds. Then try restricting the
Summary on Facilitated Communication Therapy Video
As I watched this video in class I grew more and more angry. It seemed so incredibly
clear to me in just moments that facilitated communication therapy was bogus, utter n
PLEASE READ THIS ENTIRE PAGE FIRST. Next take a look at the third page (a table of your data). The second page
describes the table of data. Once you have read and reviewed all three pages, follow the instructions on the bottom of this
To Enter Data:
Psy 392 Understanding Autism
What is autism? A developmental disorder
-enigma (no blood test for it, mysterious)
-emergence (disorder emerges across time)
-epidemic? (once thought to be very rare, 1 in 68 kids affected in US)
-exceptional (has str
These notes were not taken in class, they were taken solely from the PowerPoint
Dispersion of sunlight
o Dispersion = splitting
o Shined white light through a glass prism, produced a colorful spectrum
Color is in the