PSYCH101 Lecture Notes - Lecture 6: Retina, Precognition, Thalamus

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Published on 17 Apr 2013
School
University of Waterloo
Department
Psychology
Course
PSYCH101
Professor
Psychology 101: Sensation and Perception
(Tuesday, October 2, 2012)
*[Read Sensation and Perception Biological Part in the Textbook]
Sensation is the process is which we take in the world around us
o Detecting the source and interpreting it in our brain
Physical sensing of the environment. For the vast majority, it is a physiology concept
Physiological Processes
Relatively objective
Learning and experience are not required
Ex. Chalk on board
And perception is what we do with that information in our brain
o It is unique and different, and what we depend on
Mental interpretation of environment
Psychological processes
Relatively subjective (Your own influences)
Dependent on learning and experience
Ex. Words on board
Sensory Perceptions: [*Note] Thalamus (Within the brain) Relay centre of the brain for sensory
input and out put. Neurons are sending messages to the thalamus, and it detects light and vision
information, sending it into parts of our brain that invoke our sensory perceptions. This process is called
transduction. This allows the perceptual process, changing the energy type.
Vision Light waves are seen and then go through the brain through the thalamus
Sound (Important Sensory) A wave sensation.
o Sending auditory information into the temporal lobe, in which the brain interprets
learning and education. Sounds are sent into the thalamus, which directs information to
different parts of the brain
Olfaction (Smell) Dendrites sense molecular shapes in the air, detecting and binding the smell
through the mucous membrane of nose, going into the olfactory nerve
o Exception: This does not go through the thalamus, going through other parts of the
limbic system, like the amygdala, hippocampus, etc.
o Animalistic instinct/emotion can invoke different emotions (E.g. The smell of French
fries, the smell of a loved one). It is a primitive sense
o Humans, though have the worst sense of smell
o Subliminal Perception It doesn’t influence behaviour though
o Might be the one perception that can motivate and maybe change our behaviour since it is
most connected to the limbic system. Slight subliminal perception factor included.
Ex. Smell of leather can influence shopping behaviour buy more
Uses limbic system, instead of just thallium and cerebellum
Gustation (Taste) Shape of molecules get dissolved in the salvia through tongue, and that goes
through the thalamus
Tactile (Touch) Refers to touch and temperate, in which there are sensory neurons in skin.
Tips of fingers have the most senses
*Kinaesthetic (Deals with the body) Detecting information from our body and interpreting it
o Used for pressure and strain within the joints, muscles, tendons
o Sensory neurons > Spinal nerves > Cerebellum (Small brain deals with meteoric
function, dealing with most rehearsed or routinely functions. Ex. Showering, brushing
your teeth, driving your car. You do it without thinking very much allowing your mind
to wander.)
*Vestibular (Deals with motion- knowing where your position is, and your balance)
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Document Summary

Psychology 101: sensation and perception (tuesday, october 2, 2012) *[read sensation and perception biological part in the textbook] Sensation is the process is which we take in the world around us: detecting the source and interpreting it in our brain. For the vast majority, it is a physiology concept. And perception is what we do with that information in our brain: it is unique and different, and what we depend on. Sensory perceptions: [*note] thalamus (within the brain) relay centre of the brain for sensory input and out put. Neurons are sending messages to the thalamus, and it detects light and vision information, sending it into parts of our brain that invoke our sensory perceptions. This allows the perceptual process, changing the energy type. Vision light waves are seen and then go through the brain through the thalamus. Sound (important sensory) a wave sensation: sending auditory information into the temporal lobe, in which the brain interprets learning and education.

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