Seeing READING ASSIGNMENT Discussion of Gregory’s Article on Visual Illusions – Tues Feb 17 Available in your course pack.

Slides:

Advertisements

Similar presentations

Sensory Reception Chapter 31.

Advertisements

Chapter 6 Vision. Sensation and Perception: Important Vocabulary Terms Sensation is the process of receiving, transducing, and coding stimulus energy.

E2 – Perception of stimuli

The eye – curved cornea – lens – retina – fovea – optic disk Using Light.

Photoreceptors.

Parts of the Eye - Pupil.

Sensation Overview How is perception different from sensation? What is psychophysics? What do sense organs do? How does vision work? How does this compare.

Multiple Choice Yes/No and True/False and Matching Study the lecture notes, textbook My office hours are after class (NOTE: I won’t talk about the test.

The Retina has layers of cells

Ch 31 Sensation & Perception Ch. 3: Vision © Takashi Yamauchi (Dept. of Psychology, Texas A&M University) Main topics –convergence –Inhibition, lateral.

Visual Perception How the eye works.

Visual Perception Chapter 3 Pages

The Eye: Structure & Function

THE HUMAN EYE Lights and Lenses. Explore: How does the eye focus an image? Procedure: -Position yourself so you can clearly see an object across the room.

Vision Our most dominant sense

Sensation Chapter 5 Myers AP Psychology. Transduction  Conversion of one form of energy into another.  In sensation, the transforming of stimulus energies,

DO NOW: What do you know about our sense of sight and vision? What parts of the eye do you know? What do you know about light?

Module 12 Vision.  Transduction  conversion of one form of energy to another  in sensation, transforming of stimulus energies into neural impulses.

Vision By: Bethany, Iqra, Clint, Cameron, Nick. The Process Light enters eye through the cornea Then, it goes through the pupil which is surrounded by.

With respect to STM, grouping several items together to form a single larger item is called: A.BlockingB.Lumping C.ChunkingD.Grouping Electrochemical.

The Visual System Dr. Kline FSU.

Olfactory bulb receives input from olfactory receptors which contact mucus in nasal cavity Smell.

Mr. Koch AP Psychology Forest Lake High School

1 Perception, Illusion and VR HNRS , Spring 2008 Lecture 3 The Eye.

The Eye. Energy v. Chemical senses Energy SensesChemical Senses.

Myers EXPLORING PSYCHOLOGY Module 14 Introduction to Sensation and Perception: Vision James A. McCubbin, PhD Clemson University Worth Publishers.

Can humans or non-human animals see in the dark?.

.  Sensation: process by which our sensory receptors and nervous system receive and represent stimulus energy  Perception: process of organizing and.

The Visual Pathway Sensory Systems What is a Sensory System? –Window to the physical energies of the external environment. –Gives rise to sensory perceptions.

VISION From Light to Sight. Objective To describe how the receptor cells for vision respond to the physical energy of light waves and are located in the.

Ch 31 Sensation & Perception Ch. 3: Vision © Takashi Yamauchi (Dept. of Psychology, Texas A&M University) Main topics –convergence –Inhibition, lateral.

Vision Structure of the Eye We only use light energy to see.

Vision Eyes, Optic Nerves, Ganglion Cells, Occipital Lobe… Its got it all!

THE VISUAL SYSTEM. LIGHT Electromagnetic radiation that travels as a wave Amplitude = brightness Wavelength = color Varies in purity (richness of colors)

VISION. Vision- Physical Properties of Waves Short wavelength=high frequency (bluish colors, high-pitched sounds) Long wavelength=low frequency (reddish.

RECEPTORS IN ANIMALS RICHARD LLOPIS GARCIA Adapted by MH A2 BIOLOGY.

Psychology 210 Lecture 4 Kevin R Smith. Vision Sensory System –The eye –Exactly what we sense from our environment Perceptual System –The brain –How we.

1 Computational Vision CSCI 363, Fall 2012 Lecture 5 The Retina.

Vision  Transduction  conversion of one form of energy to another  in sensation, transforming of stimulus energies into neural impulses  Wavelength.

The Eye. Energy v. Chemical senses Energy SensesChemical Senses.

Option E: Neurobiology and Behavior. E.2.1 Outline the diversity of stimuli that can be detected by human sensory receptors, including mechanoreceptors,

Vision The Eye Contains photoreceptors Contains accessory organs including eyelids, lacrimal apparatus, and muscles.

Dr. Raj Patel OD - Vancouver Vision Clinic

1 Perception and VR MONT 104S, Fall 2008 Lecture 2 The Eye.

Sensation Intro. to Psychology PSY-101 Instructor: Miss Samia Khanum.

Sensation Intro. to Psychology PSY-101 Instructor: Ms. Tahira Zafar.

BOVINE EYE DISSECTION INTRO. Can humans or non-human animals see in the dark?

© 2011 South-Western | Cengage Learning A Discovery Experience PSYCHOLOGY Chapter 4Slide 1 LESSON 4.2 Vision OBJECTIVES Identify and illustrate the structures.

DO NOW. VisionVision Our most dominating sense. Visual Capture.

Label the Eye – use book pg. 618 Structure & Function: use book pgs Cornea: clear tissue that covers front of eye. Pupil: opening through.

Unit 4: Sensation & Perception

MODULE #13: VISION. Vision Transduction: transformation of stimulus energy (light, sound, smells, etc.) to neural impulses our brains can interpret. Our.

Cornea - The corneas main function is changing the image from the outside world into one that is upside down. Since it needs to be clear the cornea has.

The Visual Sense: Sight EQ: What is the process though which we see and how do we differentiate between different objects and types of motion?

VISION How do we see?.

Transduction Transformation of stimulus energies to electrochemical energy of neural impulses Sensory receptors are responsible for transduction Rods and.

Mr. Koch AP Psychology Forest Lake High School

Chapter 5 Vision.

Vision Seeing is Believing.

7.5.g Students know how to relate the structures of the eye and ear to their functions.

Vision Lab Review eye anatomy especially:

Option E: Neurobiology and Behavior

Vision Our most dominating sense. Visual Capture.

The Eye Part 1: Structure and Function.

Option E: Neurobiology and Behavior

Presentation transcript:

Seeing READING ASSIGNMENT Discussion of Gregory’s Article on Visual Illusions – Tues Feb 17 Available in your course pack

What kind of energy does the visual system sense and perceive? The Visual System

Light is an oscillation (a wave) in the electromagnetic field Light

What are some characteristics of light waves? Properties of light

What are some characteristics of light waves? –amplitude/intensity - how big of a fluctuation in the field/how many waves –frequency - how many fluctuations (waves) pass by a certain point in a given period of time –polarization - the orientation of the waves Properties of light

What perceptions are associated with those physical properties? Properties of light

What perceptions are associated with those physical properties? –Intensity is associated (loosely) with brightness –Frequency is associated (loosely) with color –Polarization isn’t sensed by humans (but it is by some insects and birds!) Properties of light

Light The spectrum is the range of frequencies of electromagnetic waves

The eye –curved cornea –lens –retina –fovea –optic disk Using Light

Light is focused on the retina by the curvature of the cornea and the lens –Flat lens (relaxed muscles) focuses distant points Using Light

Light is focused on the retina by the curvature of the cornea and the lens –Accomodation: Bulged lens (muscles flexed) focuses on near points Using Light

Light is focused on the retina by the curvature of the cornea and the lens Constriction of the pupil limits how much light gets in AND reduces the amount of focusing required of the lens Using Light

photoreceptors transduce incoming light ganglion cells send signals along to the brain The Retina has layers of cells

2 types of photoreceptors: rods and cones rods are very sensitive - useful in dim light Two kinds of Photoreceptors

Rods and cones are distributed differently across the retina The Retina

visual acuity (ability to see detail) depends on cones - thus acuity varies across the visual field The Retina

Why don’t you notice your blind spot? The Retina

Why don’t you notice your blind spot? –Blindspots don’t overlap! –Your brain “fills in” the missing information –The specific information in the blindspot isn’t much more missing than the rest of the periphery! The Retina

three types of cones: short, medium, and long different absorptions enable color vision The Retina

each ganglion cell integrates information from a particular spot on the retina called its receptive field Neurons “collect” information

Receptive Fields Stimulus is in receptive field Stimulus is near receptive field Stimulus is outside receptive field Action potentials

Ganglion cells project to the brain via the optic nerve information is projected to contralateral cortex! Visual Pathways