PSYCH 101 2/24
Popular in Introduction to Psychology
Popular in Department
This 3 page Class Notes was uploaded by Katie Delaney on Wednesday March 2, 2016. The Class Notes belongs to PSYC 101-006 at Towson University taught by Sandra Llera in Winter 2016. Since its upload, it has received 23 views.
Reviews for PSYCH 101 2/24
So much better than office hours. Needed something I could understand, and I got it. Will be turning back to StudySoup in the future
-Miss Georgianna Kessler
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: 03/02/16
REMINDER: Exam 1 is Monday Feb 29th, bring scantron and #2 pencil Objectives: Will finish visual system Begin auditory sensation Review: What is the role of the… Cornea protection Pupil adjustable opening that lets in light Iris Muscle around pupil that contracts and expands to change pupil size Lense Clear disk pulled by muscles to focus light thin=far fat and squished=close Retina sensory rods and cones (cones=light, color, detail, rods=dark, b&w, lack detail) Fovea collection of cones Optic Nerve axons that lead to brain (hits thalamus first) Vision and the Brain Optic nerve ● connect the thalamus and from thalamus to visual cortex in occipital lobe FIG 4.6 PG 113 ● we have two eyes for depth perception ● happens because the info is just a little bit diff. because of the distance between eyes EX. 3D movies shot from two cameras allows for depth ** Ask Chris if he can see a 3D movie** Feat. Detection ● Indie. cells in the visual cortex in the occipital lobe respond to different features like edges, angles, and movements. ● These cells working together allow for the whole pic. to be visualized. Movement aftereffects (MAEs) ● For the swirling pictures, the cells looking in a counterclockwise image rest so the cells that see movement of clockwise direction begin. This is why Llera’s face was moving when looked away from the swirling image. Hearing ● We have a range of stuff we can hear an this range matches really well with the range of pitch in the human voice. ○ Can recognize people from sound of voice BC we are a social species who depend on that ● Animals can hear differently than us, they can hear outside of our range. EX. dog whistle, cats hearing electricity ● Stimulus input = sound wave Sound wave ● different from light BC it is composed of compressed and expanded air molecules (it is compressing the air around it). ● Certain movements create sustained sound: vibrating, hitting compresses air ○ EX. bell vibration sends expanded and compressed waves out from the source of the sound. ○ Can hear and feel sound waves: at concerts, brass, bass, ● BONE CONDUCTION hear things by feeling them when you hear your own voice when ears are closed ○ emphasizes the fact that this air literally MOVES us Sound Characteristics Frequency of waves (pitch) ● has to do with the wavelength (hertzHz) ● short wavelengths=high frequency= high pitch ● long wavelengths=low frequency=low pitch ● We can hear between twenty and twenty thousand Hz ○ as get older, lose ability to hear higher pitches Intensity (loudness) ● determined by amplitude of a wave (decibelsdB) ● high amp=loud; low amp=quiet ● 3040 dB is substantially louder. ● >120 dB causes hearing loss. ○ either damage to eardrums, bones, or hair. Anatomy of Hearing FIG 4.30 PG 129 ● taking sound waves and transducing it into neural signals OUTER EAR vibes in air ● Catches the sound waves down into ear ○ extending the ear catches more sound MIDDLE EAR vibes in bones ● eardrum skin that’s pulled very taut ● three tiny bones called ossicles hammer anvil and stirrup ● concentrates vibes onto the inner ear INNER EAR vibes in fluid ● contains the cochlea a snail shell looking tube filled with fluid ● vibrations of the three little bones vibrates the fluid… Cochlea ● fluid filled snail shaped tube transduces sound vibes into auditory signals ● vibrations disturb fluid that causes a ripple in… Basilar membrane: ● basically what sends the neural signal to the brain ● lined with hair cells that detect/send signal through adjacent nerve fibers ○ people can lose hearing if these hair cells are damaged, and if bones are damaged. ● We have to ears to locate the source of the sound the amount of time to hit either ear. ● the shadow effec makes it so that the sound is not as easily registered Pick up with perception on Friday 2/26
Are you sure you want to buy this material for
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'