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Course book Goldstein, Sensation and Perception

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1 Course book Goldstein, Sensation and Perception
exams two mid-terms 1½ hours multiple choice + short notes end-of-term 2-3 hours 30%, 30% and 40% (best counted as 40%) if not registered, go to office TA = Lisa Pritchett Room: Sherman Health Research Centre Office Hrs: by appointment Phone: ext 40886 Instructor = Prof Laurence Harris Room: Sherman Health Research Centre phone: ext 66108 feel free to interrupt with questions use of web page and

2 Timetable for (2011) 1 Jan 6 <-- intro 2 Jan 13 3 Jan 20 4 Jan 27 5 Feb 3 <-- midterm 1 6 Feb 10 7 Feb 17 Feb 24 reading week 8 March 3 9 March 10 <-- midterm 2 10 March 17 11 March 24 12 March 31 TBA <-- Final exam

3 Sensation & Perception (II)
PSYCH 3270 Sensation & Perception (II) Introduction

4 1 Principles of neural organization
2 Psychophysics 3 Somatosensory System (including the vestibular system) 4 Taste and Smell 5 Perception of Time 6 Speech Perception

5 APPROACHES Psychophysics threshold supra-threshold Neurosciences record lesion stimulation anatomy Singe unit Whole brain

6

7 Principles of Neural Organization section 1

8 Wilder Penfield

9

10

11 Section 2 PSYCHOPHYSICS

12 (including vestibular system)
Section 3 SOMATOSENSORY (including vestibular system)

13 PRESSURE THRESHOLDS

14 Sensory homunculus

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16

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19 Falling Rabbit

20 Section 4 CHEMICAL SENSES

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22 OLFACTORY BULB

23 Section 5 TIME PERCEPTION

24 -- All of these represent the same speed (m/s)
-- bigger distance -- faster time! compression of space = compression of time!

25 Section 6 SPEECH PERCEPTION

26

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28 Principles of Neural Organization section 1

29 Johannes Műller 1826 DOCTRINE OF SPECIFIC NERVE ENERGIES “regardless of how a receptor is stimulated it produces only one kind of sensory experience”

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31 WHEN DO CELLS PRODUCE ACTION POTENTIALS?
1 -- electrical stimulation (artificial depolarization) 2 -- spatial and temporal integration of EPSPs and IPSPs across the neurone’s membrane resulting in the neuronal threshold being reached. Generator potential 3 -- sensory stimulation (transduction) mechanical (cytoskeleton) chemical (receptors, second messengers) light (hyperpolarization)

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33

34 KEY WORDS

35 Principles of Neural Coding
MODALITY labelled lines specific nerve energies INTENSITY proportional to frequency population (recruitment) DURATION rapidly adapting (RA) slowly adapting (SA) LOCATION locate a site distinguish two sites mapping


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