Unformatted text preview: Biology of Mind Biology of Mind
Chapter 2 Part 1: The Brain Chapter 2 Outline Chapter 2 Outline True Stories of Brain Injuries Techniques of Brain Exploration Functions of Parts of the Brain Anatomy of Neuron Neural Communication Keep in mind… Keep in mind… Everything psychological is simultaneously ________ Studying the Brain Studying the Brain The source of all our ______________________________! An Accident at Work… An Accident at Work…
Ron Hunt (2003( Drop ped power drill during construction workd, then fell on top of it. Another Accident at Work… Another Accident at Work…
Phineas Gage railroad accident Gage’s Medical Treatment Gage’s Medical Treatment “The parts of the brain that looked good for something, I put back. Those that were too badly injured and looked as if they were no good, I threw away. I kept the wound clean, and Gage got well.” a physician who treated Gage Damage to Gage’s brain Damage to Gage’s brain Hole in his frontal lobes Change in emotions; problems with decision making & judgment Exploring the Brain Exploring the Brain Early studies were limited by technology Now we are able to use various techniques Clinical observations manipulating the brain Recording electical activity Neuroimaging techniques Brainstem LowerLevel Brain Structures LowerLevel Brain Structures Oldest and central core of the brain Responsible for automatic survival functions. Composed of
Medulla (heart rate, breathing and swallowing) Pons (sleep and arrousal) Reticular Formation Arrousal, sleep, and attention LowerLevel Brain Structures LowerLevel Brain Structures Cerebellum “Little brain” Coordination, voluntary movement, and ryhthm LowerLevel Brain Structures LowerLevel Brain Structures Limbic system Associated with emotions and drives Thalamus Relay station for sense info Regulates eating, drinking, Reward center Hypothalamus And body temperature LowerLevel Brain Structures LowerLevel Brain Structures Limbic system Hippocampus Processes memory Amygdala Aggression and fear Cerebral Cortex Cerebral Cortex Controls & processes info for body Brain hemispheres are divided into regions
Frontal lobes Parietal lobes Occipital lobes Temporal lobes Activity: The Brain & Driving Activity: The Brain & Driving Tell how you use each part of the brain while you drive a car.
Cerebellum Medulla Pons Reticular Formation Thalamus Hypothalamus Activity: The Brain & Driving Activity: The Brain & Driving Tell how you use each part of the brain while you drive a car.
Amygdala Hippocampus Parietal & Frontal lobes Occipital lobe Temporal lobe Motor Cortex & Sensory Cortex Motor Cortex & Sensory Cortex Activity: Sensitivity Differences Activity: Sensitivity Differences Compare the sensitivity of the touch receptors in your hands with that of your back. Plasticity of the Brain Plasticity of the Brain Brain’s ability to reorganize or modify itself
Often occurs after brain damage May take time Rewiring may take place over time Children’s brains are most plastic Cerebral Hemispheres Cerebral Hemispheres Left & Right cerebral hemispheres Corpus Callosum Connects hemispheres Splitbrain Biology of Mind Biology of Mind
Chapter 2 Part 2: Neural Communication Neurons Neurons 100200 billion in human brains 3 Types Sensory Motor Interneurons The Parts of aNeuron The Parts of a Neuron Based on electrical impulse Neural Communication Neural Communication Threshold Level of stimulation needed to trigger a nerve impulse. (all or nothing response) Nerve Impulse an electrical charge that travels down the axon. Gap/space between 2 neurons Chemical messengeres Action Potential Synapse Neurotransmitter ...
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- Spring '09
- Neuroanatomy, BRAIN STRUCTURES, Biology of Mind Biology of Mind, frontal lobes