Psych. DMA Please take out a piece of paper and complete the following: 1.Write down the vocabulary word and definition.2 2. Choose ONE of these options and complete it. –Draw a picture that illustrates/explains the vocabulary word. –Rewrite the definition in your own words. –Write a sentence that includes the term and the information from the definition. Dominance Functional asymmetry between a pair of bodily structures (as the right and left hands) Either the right or left hemisphere of the brain is dominant in everyone: hence one is preferred and controls the majority of actions performed.

Today’s Agenda DMA Brain Facts Structures Hemispheres Homework Media Psychologist assignment due Wednesday, Feb. 17th

Human Brain

Human Brain - Facts Weighs 3 lbs. Consumes 20% of body energy 100 billion cells

Human Brain - Facts 10,000 neurons die each day Aren’t replaced (after age 2) Neurons regulate: consciousness, perception, thought & action.

Human Brain - Facts We use 5-10% of our intellectual potential.

Human Brain - Hemispheres Brain is divided into two halves. Everyone is dominant in one hemisphere.

Hemisphere Quiz 1.Do you consider yourself right or left handed? 2.With which hand do you eat? 3.With which hand do you write? 4.Which eye do you wink with? 5.Which shoe do you put on first? 6.Which sleeve of a coat do you put on first? 7.On which side of your mouth do you start brushing your teeth? 8.Which foot would you put on a shovel? 9.With which foot would you kick a ball?

Human Brain – Hemispheres Please jot this down… Left Hemisphere Controls right side of body. Speech Writing Names Manage a schedule Math (algebra) Right Hemisphere Visual Artistic Symbols Facial recognition Music Math (geometry)

Human Brain - Hemispheres It is difficult: For the hemispheres to work together. For you to do something with your non-dominant hand/side.

Brain Hemispheres - Demonstrations 1.Pat your head & rub your stomach. 2.Rotate your index fingers different directions. 3.Pat your knees with two different rhythms. 4.Any others?

Brain Hemispheres – Famous Experiments “Split brain” experiments Corpus Callosum was cut Hemispheres could no longer communication with each other. People could still walk, talk, etc…

Brain Hemispheres – Famous Experiments Split-brain patient is sitting down, looking straight ahead and is focusing on a dot in the middle of a screen. Picture of a spoon is flashed to the right of the dot. The visual information about the spoon crosses in the optic chiasm and ends up in the LEFT HEMISPHERE (seen with the right eye) When the person is asked what the picture was, the person has no problem identifying the spoon and says "Spoon.“ LEFT HEMISPHERE is responsible for language.

Brain Hemispheres – Famous Experiments However, if the spoon had been flashed to the left of the dot. The visual information would have traveled to the RIGHT HEMISPHERE. (from the left eye). The person was asked what the picture was – she/he said “I don’t know”. Because language & naming is in the LEFT HEMISPHERE.

Brain Hemispheres – Famous Experiments Another split brain experiment: Patients were shown a picture of a face that is ½ male and ½ female.

Brain Hemispheres – Famous Experiments Therefore, if the patient focuses on the dot in the middle of the forehead: The visual information about the woman's face will go to the RIGHT HEMISPHERE (left eye) Information about the man's face will go to the LEFT HEMISPHERE (right eye)

Brain Hemispheres – Famous Experiments When a split brain patient is asked to point to a whole, normal picture of the face that was just seen The patient will usually pick out the woman's picture Remember, the information about the woman's face went to the RIGHT HEMISPHERE. Which controls your ability to see things visually.

Brain Hemispheres – Famous Experiments However, if the patient is required to say whether the picture was a man or a woman, the patient will SAY that the picture was of a man. Remember – language/naming is controlled by the LEFT HEMISPHERE so only info from the right eye will be labeled correctly. Therefore, depending on what the patient is required to do, either the right or left hemisphere will dominate.

Brain Hemispheres Split Brain Game

Brain Hemispheres - Demonstrations Using your non-dominant hand (aka wrong hand)… 1.Write your name 2.Write a note to a friend. 3.Cut out shapes. 4.Create a thank you or birthday card. Art supplies are in the back of the room. You can only use your non-dominant hand.