Course book Goldstein, Sensation and Perception

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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: 1022 Sherman Health Research Centre Office Hrs: by appointment Phone: 416-736-2100 ext 40886 Email: lmpritch@yorku.ca Instructor = Prof Laurence Harris Room: 1018 Sherman Health Research Centre email: harris@yorku.ca phone: 416-736-2100 ext 66108 feel free to interrupt with questions use of web page and email http://www.yorku.ca/harris/3270

Timetable for 3270 (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

Sensation & Perception (II) PSYCH 3270 Sensation & Perception (II) Introduction http://www.yorku.ca/harris/3270

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

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

Principles of Neural Organization section 1

Wilder Penfield

Section 2 PSYCHOPHYSICS

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

PRESSURE THRESHOLDS

Sensory homunculus

Falling Rabbit

Section 4 CHEMICAL SENSES

OLFACTORY BULB

Section 5 TIME PERCEPTION

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

Section 6 SPEECH PERCEPTION

Principles of Neural Organization section 1

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

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)

KEY WORDS

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