1. Mouse party and Meth project – Key concepts
Drugs/medicines are chemicals that alter our experience by….
An AGONIST is a drug that…
An ANTAGONIST is a drug that…
Some drugs are addictive because…
What makes different neurotransmitters have different effects on our experience?
Drugs such as methamphetamine are detrimental to our health because they…

2. Paper Back and Sign up
If you’re not happy with your grade, you may rewrite the paper.
You must first review the rubric and see where you lost points.
Sign up for a time to see me and discuss changes.
Once I approve you may rewrite paper and turn in to be re-graded.

3. One of 3 (at left)is missing or not explained
Excellent
Good
Needs improvement
Missing
Survival behavior
Behavior is specific, observable and measurable here in Davinci community.
One of 3 (at left)is missing or not explained
Two of 3 are missing or not explained
Survival behavior is not addressed
If chose CASE STUDY
Subject
Person used for case study is ideal candidate, and you clearly explain why.
Person used for case study is a reasonable candidate, and you explain why
Person used may be good candidate, and/or you only partially justify your choice
Data gathering methods
You clearly explain at least 3 different approaches you’d use to gather data from this person
You partially explain/2 approaches
You poorly explain/1 or 2 approaches
Advantages of this approach
You clearly discuss why a case study would give you insight into this survival behavior
Partial
Poor
Disadvantages of this approach
You clearly discuss the limitations of a case study in understanding this behavior
If chose OBSERVATION (field or lab)
Location
You clearly describe the location and explain why it is ideal for observation.
You describe at least 2 behaviors you would be looking for during observation.
Advantages
You explain 2 advantages of this approach.
Disadvantages
You describe 2 limitations of this approach.
If chose SURVEY
Type of survey
You clearly address how you would obtain survey participants and who they are
You include 5 sample questions (not open ended) that would be in your survey.
You address 2 advantages of conducting a survey.
You address 2 challenges to conducting a fair and representative survey
If chose CONTROLLED EXPERIMENT
Experimental question
You define a clear research question can establish cause and effect between two variables.
Set up
You show your design including hypothesis, IV, constants, DV.
Advantage
You address two advantages of this approach.
Disadvantage
You address two limitations of this approach.

4. The PNS
Takes in information from external environment using sense organs
Sends to SENSORY CORTEX of brain for processing
MOTOR CORTEX of brain decides on an action.
Sends instruction to muscles to carry out action.

5. Interneurons Connect: PNS with CNS
Within PNS, sensory neurons (afferent) with motor neurons (efferent)

9. PNS Activity
Objective: How can I measure the speed of my PNS? What affects my reaction time?
Hypothesis:
Procedures: Pair up. Person #1 holds ruler vertically with the 30 cm mark at top. Zero cm is at bottom.
Person #2 has fingers poised aver zero cm mark at bottom.
Person #1 drops the ruler without telling person #2 when they will do it.
Person #2 grabs ruler when they see it drop.

10. Make the following table: Do 10 trials with each hand.
LEFT HAND
RIGHT HAND 1 2 3 4 5 6 7 8 9 10
AVG (cm)
Data/Observations.
Make the following table:
Do 10 trials with each hand.
Calculate average by adding numbers and diving by 10.
Repeat for each person.

11. Class data Name Left hand (average cm) Right hand (average cm) 1 2 3 45 6 7 8 9

12. Analysis:
Which person had the fastest hands?
On average, which of hand is the quickest?
Why do you think there is a "delay" from the time you see the ruler drop to the time your hand catches the ruler? Describe the pathway of neural communication from sensory organ to muscle.
Name two other variables that might have played a role in how fast your reaction time was in this lab.
What do you think would happen if your partner asked you a question while they dropped the ruler? Try it for 5 trials. Why do you think this makes a difference?
Do the experiment by yourself, using one of your hands to drop and the other to catch the ruler. How were your results different? Why do you think this is so?
Draw a bar graph comparing the average times of the fastest hand for each person at the table.

13. How to calcuate reaction time
Let’s say it dropped on average 8 cm. You have to convert that to meters so divide by 100.
8 cm
= .08 m
100
Use the formula: speed = distance / time
We will use the rounded up number of 10 m/s for gravity’s speed m
10 m/s = now solve for t t
.08
= sec 10
This is how long it took you to see the ruler drop, react, and catch the ruler.

14. Today’s Key Concepts Sense organ (eye, ear, taste buds etc)
Sensory neurons (afferent neurons)
Interneuron (connect PNS and CNS and sensory neurons with motor neurons)
Motor neuron (efferent neurons)
Sensory and motor cortexes of CNS.
Muscle (Effector. Ex: hand)
Somatic and autonomic divisions of PNS

15. HOMEWORK
Think about a time in your life when you have been really scared.
You don’t need to share it with the class, but you must be willing to write about it next class (privately).
Write a short paragraph about it. Bring in.
WE CANT DO OUR ACTIVITY NEXT CLASS WITHOUT IT!