- Some scientists divide the brain into three parts.
I. Hind Brain.
1. Medulla Oblangata
* Heartrate, breathing, and blood pressure.
2. Pons
* Connects the hind brain, mid brain, and fore brain together
* Involved in facial expressions.
3. Cerebellum
* Located in the back of our head- means little brain.
* Coordinated muscle movement; like tracking a target.
II. Mid Brain
1. Coordinates simple movements with sensory information
2. Contains the Reticular Formation: arousal and ability to focus attention.
III. Fore Brain
1. Thalamus
* Receives sensory information and sends them to appropriate areas of fore brain.
* Like a switch board.
* Everything but smell
Limbic System: Emotional center of the brain
Made up of the Hypothalamus, Amygdala, and Hipocampus
1. Hypothalamus
* Pea sized in brain, but plays a not so pea sized rule.
* Body temperature, hunger, thirst, sexual arousal.
2. Hippocampus
* Memory processing
3. Amygdala
* Vital for basic emotion.
Cerebral Cortex
I. Hind Brain.
1. Medulla Oblangata
* Heartrate, breathing, and blood pressure.
2. Pons
* Connects the hind brain, mid brain, and fore brain together
* Involved in facial expressions.
3. Cerebellum
* Located in the back of our head- means little brain.
* Coordinated muscle movement; like tracking a target.
II. Mid Brain
1. Coordinates simple movements with sensory information
2. Contains the Reticular Formation: arousal and ability to focus attention.
III. Fore Brain
1. Thalamus
* Receives sensory information and sends them to appropriate areas of fore brain.
* Like a switch board.
* Everything but smell
Limbic System: Emotional center of the brain
Made up of the Hypothalamus, Amygdala, and Hipocampus
1. Hypothalamus
* Pea sized in brain, but plays a not so pea sized rule.
* Body temperature, hunger, thirst, sexual arousal.
2. Hippocampus
* Memory processing
3. Amygdala
* Vital for basic emotion.
Cerebral Cortex
- Top layer of the brain.
- Contains wrinkles called fissures.
- The fissures increase surface area of our brain
- Laid out, it would be the side of a large pizza.
Hemispheres
- Divided into a left and right hemisphere
- Contralateral controlled- Left controls right side of the body and vice versa.
- Brain Lateralization
- Lefties are better at spatial and creative logic
- Righties are better at logic.
Split brain Patients
- Corpus Callosum attaches the 2 hemispheres of the cerebral cortex.
- When removed you have a split-brain patient.
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