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Duke University RD Schwartz-Bloom
Duke University RD Schwartz-Bloom
Motor ¡ Sensory ¡
From: Neuroscience, Sinauer Press
Think,then Move! Rochelle D. Schwartz-Bloom, PhD Professor of - - PowerPoint PPT Presentation
Think,then Move! Rochelle D. Schwartz-Bloom, PhD Professor of - - PowerPoint PPT Presentation
Think,then Move! Rochelle D. Schwartz-Bloom, PhD Professor of Pharmacology Professor of Education Duke University Medical Center RD Schwartz-Bloom Duke University Sensory Motor From: Neuroscience, Sinauer Press RD Schwartz-Bloom
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Duke University RD Schwartz-Bloom
Think,then Move!
From: Backyardbrains.com
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Duke University RD Schwartz-Bloom
Biology: Neurons do the work
From: Understanding FASD: A Comprehensive Guide http://sites.duke.edu/rise/resources/teaching-material/
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Duke University RD Schwartz-Bloom From: Animated Neuroscience & the Actions of Nicotine, Cocaine, & Marijuana in the Brain
Biology: Acetylcholine is the key
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Duke University RD Schwartz-Bloom
Na+ K+ Cl-
- 70 mv
- utside
inside = other anions
- - - - - - - - - - - - - - -
+++++++
Chemistry & physics: It’s the ions!
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Duke University RD Schwartz-Bloom
Biology, chemistry & physics: Currents flow
Adapted from: Neuroscience, Sinauer Press
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Duke University RD Schwartz-Bloom
mv
Physics: Currents lead to Action Potentials!
Adapted from: Neuroscience, Sinauer Press
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Duke University RD Schwartz-Bloom
How about some real Action Potentials! Let’s “grip and squeeze”
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Duke University RD Schwartz-Bloom
Real Action Potentials: grip and squeeze
Weak: 1 motor unit
AP
Moderate: > frequency more motor units Strong: high frequency random firing
From: RA Mezzarine et al., (2013) DOI: 10.5772/54870
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Duke University RD Schwartz-Bloom
Let’s do it! Muscle fatigue: What happens to the APs?
From: Backyardbrains.com
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Duke University RD Schwartz-Bloom