Psychophysics (1-2)

catdees1
Mind Map by catdees1, updated more than 1 year ago
catdees1
Created by catdees1 about 6 years ago
9
0

Description

Lecture 1 & 2

Resource summary

Psychophysics (1-2)
  1. History
    1. Rene Descartes
      1. Deduction

        Annotations:

        • I think therefor I am
      2. Spinoza
        1. Mind/body are just different ways of perceiving reality
        2. Weber & Fechner
          1. Measure mental events
          2. Wundt
            1. Physiological relationship b/w brain/mind
              1. Can measure rxn to stimuli
                1. So can measure psych events!
                2. Psychophysical parallelism
                3. Experimental Introspection
                  1. Careful observation of own perceptions
                    1. Clear beginning/ending
                      1. Careful observation of own perception
                        1. Repitition
                          1. Variation
                            1. Can experiment
                    2. Quantitative study of relationships b/w sensation and stimulus
                      1. Examples
                        1. Beauty & Geometric features
                          1. sweetness and amt of sugar
                            1. money & happiness
                              1. Not always linear
                            2. Terms
                              1. Proximal Stimulus
                                1. Energy distributed on receptor
                                2. Distal Stimulus
                                  1. Environmental source
                                  2. Threshold
                                    1. Min. energy required to complete a perceptual task
                                      1. Absolute Threshold
                                        1. Nothing to Something
                                          1. Ex. total darkness to dim light
                                        2. Relative Threshold
                                          1. Something to something
                                            1. Ex. dim light to more light
                                              1. Discriminating task
                                          2. Properties
                                            1. Variations
                                              1. Different moments of threshold vary
                                                1. Random fluctuations
                                                  1. Fluctuation in neurons carrying visual signals
                                                    1. Level of alertness
                                                    2. Eventual normal curve
                                                    3. Relationship to sensitivity
                                                      1. Momentary Threshold
                                                        1. Not quite sure if see it
                                                        2. Lower Threshold
                                                          1. Higher sensitivity
                                                            1. Low intensity required for you to detect
                                                    4. Why?
                                                      1. Many factors may affect the outcome of visual testing
                                                        1. Must understand why!
                                                        2. Visual testing is sensation vs stimuli! This is what optometrists do!
                                                      Show full summary Hide full summary

                                                      Similar

                                                      Cell Biology Chapter 2
                                                      Sheridyn11
                                                      The Energy and Chemistry of Life
                                                      jensha21285
                                                      Stevens Power Law
                                                      cjjstone
                                                      Cell Biology Chapter 3
                                                      Sheridyn11
                                                      Health Assessment Exam 1
                                                      Harry Westbrooks
                                                      Exam 1 (POSC 215 - Comparative Politics)
                                                      Renee Park
                                                      Matching Section Study Guide
                                                      Donald Carlson
                                                      Psyc concepts chapter 1
                                                      Victoria hamm
                                                      Listening Study Guide
                                                      Donald Carlson
                                                      Birth of The Universe
                                                      Isabella N
                                                      Perception, Exposure, and Attention
                                                      ericjordan92