PSYC 317 - 1
Popular in Sensation and Perception
Tricia Mae Fortuna
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Popular in Psychology (PSYC)
This 1 page Class Notes was uploaded by Tricia Mae Fortuna on Saturday September 10, 2016. The Class Notes belongs to 317 at Towson University taught by M. Paz Galupo in Fall 2016. Since its upload, it has received 11 views. For similar materials see Sensation and Perception in Psychology (PSYC) at Towson University.
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Date Created: 09/10/16
317 8/30/2016 Sensation & Perception: Process of how we’re interacting with the outside world Psychology: Study of Behavior, Cognitions, & Emotions Sensation & Perception: Collecting information from outside world (Basis of Everything) Cognition, Emotion, Reaction Neural Energy: Electrochemical Language in the Brain 1. SENSATION: How we are collecting physical energy from outside stimuli converting it to neural energy (how the brain processes information) a. Relatively FIXED process dependent on our anatomy (always regular on how I’m taking information from the world) b. Same stimuli for each person 2. PERCEPTION: Interpreting Neural Energy (making sense & being aware of stimuli) a. FLEXIBLE process informed by our past experience (long term memory) b. Depends on each person 3. COGNITION: Having a thought SENSATION 3 Principles of Sensation 1. THRESHOLDS: Giving us information of how much energy we need to have the information (Relationship: Physical & Neural Energy) a. ABSOLUTE THRESHOLD: Minimum amount of Physical Energy necessary to Cause a Sensation (Bottom Range of Threshold) b. DIFFERENCE THRESHOLD: Minimum amount difference necessary between two stimuli for us to notice the difference (Absolute threshold – change in threshold = Difference threshold) 2. SENSATION IS BIASED: by our anatomy – biased receptor levels a. Sensory Receptors: specialized neurons designed to react or respond to physical stimuli and in respond generate electrical signal 3. SENSORY ADAPTATION: Given constant levels of stimulation decreases our sensitivity (don’t always respond to same stimuli the same way – Ex: Constant banging of the book) a. Cognitive & Cellular Level – Not going to respond the same way b. Biased to new information – Makes you more available to new information 3 Stages of Sensation 1. Modification of incoming stimuli by accessory structures a. An accessory structure modifies the stimuli: EYE b. 2. Transduction – actual conversion of one energy to another a. Physical Energy to Neural Energy b. Receptors = transducers 3. Sensory Nerves – Pathway that sends Neural Signal to the Brain so it can be processed Doctrine of Specific Nerve Energies: the way that the brain detects differences across sensory information is by the location of the activity
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