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Unit 3: Biological Level of Analysis

Unit 3: Biological Level of Analysis. Day 2. Outcome(s):. Explain, using examples, the effects of neurotransmission on human behavior Discuss the use of brain-imaging technologies in investigating the relationship between biological factors and behavior . Agenda:. Psych 1 – Reading Quiz

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Unit 3: Biological Level of Analysis

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  1. Unit 3: Biological Level of Analysis Day 2

  2. Outcome(s): • Explain, using examples, the effects of neurotransmission on human behavior • Discuss the use of brain-imaging technologies in investigating the relationship between biological factors and behavior

  3. Agenda: • Psych 1 – Reading Quiz • More on Neurotransmitters – Mouse Party • Coloring Activities – What’s In Your Brain? & What’s Your Brain Doing? • Ethics in Brain Research – animals and humans • Reading & Discussion • Technology in Brain Research • Closure – Current Event

  4. Neurotransmitters • Neurotransmitters: chemical messengers that relay neural messages across the synapse (many are also hormones) • There are several types of neurotransmitters, and each of them is responsible for some specific function. • Mouse Party – Drugs & Neurotransmitters • http://learn.genetics.utah.edu/content/addiction/drugs/mouse.html

  5. What’s in Your Brain? 1. Cerebral Cortex 2. Thalamus 3. Corpus callosum 4. Hypothalamus 5. Hippocampus 6. Pituitary gland 12. Cerebellum 7. Midbrain 10. Brainstem 8. Pons 9. Medulla 11. Spinal Cord

  6. What’s Your Brain Doing? • 2. Parietal lobe • Touch and pressure • Taste • Body awareness • Frontal Lobe • Body movement • Personality • Concentration, problem solving • Meaning of words • Emotional reactions • Speech • Smell • 6. Limbic Lobe • Located inside the brain • Controls emotions like happiness, sadness, and love • 3. Occipital Lobe • sight • 5. Temporal Lobe • Receive and process sound • Recognizing faces • Emotion • Long term memory • 4. Cerebellum (Latin – “little brain”) • Fine motor (muscle) control • Balance and coordination (avoid objects • and keep from falling)

  7. Ethics in Brain Research • Animals • Reading: More Experience = Bigger Brain • Humans • http://worldsciencefestival.com/videos/ethics_and_the_brain_project

  8. Technology in Brain Research • EEG – records brain waves • Electroencephalograph: a device for recording brain waves, typically by electrodes placed on the scalp. The record produced is known as an electroencephalogram (EEG) • Senses which parts of the brain are most active • EEG is not a very precise instrument • Mapping the Brain with Electric Probes: • Wilder Penfield: during brain surgery, stimulated patients’ exposed brains with an electrode and recorded responses • Helped identify boundaries of diseased brain areas (to avoid removing healthy tissue) • Demonstrated brain’s surface is divided into regions with different functions

  9. EEG

  10. Technology cont. • CT scan (computerized tomography): computerized imaging technique that uses X rays passed through the brain at various angles and then combined into an image • PET Scan (positron emission tomography): an imaging technique that relies on the detection of radioactive sugar consumed by active brain cells • MRI (magnetic resonance imaging): imaging technique that relies on cells’ responses in a high-intensity magnetic field • fMRI (functional magnetic resonance imaging): a type of MRI that reveals which parts of the brain are most active during various mental activities

  11. CT Scan

  12. PET Scan

  13. MRI

  14. fMRI

  15. Closure: Current Event • http://www.colbertnation.com/the-colbert-report-videos/425103/april-04-2013/francis-collins (8 min) • What device is Dr. Collins using?

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