Psych Ch 2

• The shape of your skull mimicked your brain (false)
• -Discovered the brain spreads out their work 

Cut out part of your brain adn see what functions you loose

• Electrical sensors placed around brain
• -You don't get exact info just a broud idea

• -Injected with glucose
• -Do a series of functions
• -It lights up what parts of your brain are working

• -Injected with dye
• -You can see structural differences with a clear pic

• -Watch the brain operate
• -Combo of PET and MRI scans 
• -Uses magnetic fields 

• Recieve messages from other neurons 
• -looks like tree branch

• If it gets enough messages then it will send it
• The messages are sent to the Axon

• Covers Axon and protects from damage
• -speeds up the neural impulses
• -Brain can communicate with itself faster

Messages are delivered to other nuerons

• Once threshold is met then gate opens and domino effect occurs 
• It happens extremely fast but because there are so many different steps it takes you a min to respond

Electrical impulses travel from one neuron to another across a tiny junction known as a synapse

Sending neuron will reobsorb the leftovers 

Only brain and spinal cord 

• Everything else (neurons)
• Stomatic
• Autonomic

Voluntary movements of your muscles

• Controls self regulated actions 
• (heart beat, breathing)

Arousing

Calming

Heartbeat and breathing

Coordinate movements

Controlling arousal level

Helps filter sensory uniformation

• Little brain, helps coordinate movement and balance judge time, regulate emotions
• *Alcohol effects this 

• several structures in brain 
• associated with motivation, emotions, ect

Associated with Memory forming 

Almond shaped, fear and aggression

• Below thyalamus
• Motivation and drives, 
• 4 F's

Feeding, Fleeing, Fighting, Mating 

• All of complex abilities
• language, think, lie, move body

Abstract thinking, planning, speaking, personality

Sensory info to touch

Visual info

Auditory info 

• Motor cortex- moving body
• Sensory cortex

• Railroad worked and rod through head
• -we now know the frontal lobe is associated with the personality b/c his changed drastically 

• 1. visual cortex- written words
• 2. angular cortex- visual to auditory code
• 3. Wernicke's area- interprets auditory code
• 4. Broca's Area- Controls speech muscles 
• 5. Motor Cortex- Word is pronounced

Speaking

Visual