Meet the Profs event Thursday Sept. 23 at 4:30 in AH117.

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Presentation transcript:

Meet the Profs event Thursday Sept. 23 at 4:30 in AH117

You’re invited to participate in a study: Psychology study on sexual orientation Recruiting homosexual females and heterosexual and homosexual males Involves a voice sample and hand scan, and completing a survey Anonymous Contact

Light is focused on the Retina

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

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

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

the retina is mapped onto primary visual cortex called a retinotopic or spatiotopic map Visual Pathways Stimulus Cortical Activity

signals are separated according to the type of information Visual Pathways Dorsal “Where” Pathway: Motion and Location Ventral “What” Pathway: Color and Form Primary Visual Cortex (V1)

Sensory Systems: Auditory (hearing) Visual (sight) Gustatory (taste) Olfactory (smell) Somatosensory (touch/temperature/pain) Vestibular (balance)

Sensory systems extract information about the environment by transducing energy Perceptual mechanisms interpret that information and fill in the missing parts Some Themes

Sensory systems in the brain are organized in a way that reflects the nature of the sensory surface –somatotopy, retinotopy = spatiotopy –cochleotopy = tonotopy Sensory information is often handled by contralateral hemisphere Some Themes

Are you getting it? We’ve gone through a lot of material REMEMBER: The goal wasn’t to memorize a bunch of facts I want you to think critically about how these systems work and what that means for perception

Are you getting it? Here’s an example of the kind of question I might ask you: Notice it requires both fact regurgitation and some reasoning. When a sound source is moving toward you, the spacing between the regions of compression and rarefaction is smaller than when it is moving away from you, what effect does this have on the percept of the sound ?

How to practice getting it: Make up your own questions! tell your friends, get them to ask you questions Notice and think about the world around you

Revisit the lecture slides online Use Sensation and Perception text as a resource! Office Hours: Monday room D856 or by appointment What if you’re not getting it? Try these (in this order):

Next Time: We begin studying perception… Hearing