Brain

· We know a lot more than used to.

· Non-invasive techniques

§ EEG-Brain Wave

§ CAT-x-ray

§ PET-detection of radio tracer (measures active places, “hot spots”, with “glucose”)

§ (functional)MRI- magnetic field (anatomy and which part of brain is active)

Division

· Hind

· Mid (smallest, doesn’t do much)

· Fore (largest for humans)

Hind

· House keeping function.

· E.g., reflex for breathing

· Brain stem – Reticular formation

· Medulla – Reflexes

· Cerebellum – Coordination of voluntary muscles (e.g., rapid movements) (playing piano)

Mid

· Relay station to direct information to other parts of brain.

Fore

· Most interesting.

· Thalamus

§ Switching station

· Hypothalamus

§ Motivation and emotion

§ Eating, drinking, sex

§ Seat of emotion

· Limbic System

§ Emotion and memory

§ Septum and amygdala – emotion

§ Hippocampus – Creation of new memory

§ Korsokoff’s Syndrome (permanent damage)

Cerebral Cortex

· Larges

· Two hemispheres – left and right

· Connected by Corpus Callosum

· Cut – create “split brain” syndrome

· Left and right function differently

· Left – logical and mathematical

· Right – Spatial and artistic

Also

· Left – controls language

§ Broca’s area – speech production

§ Wernicke’s area – speech comprehension

Four Lobes

· Frontal

§ Prefrontal cortex

§ Primary motor cortex

· Parietal

§ Primary somatosensory cortex

· Occipital – visual cortex

· Temporal – auditory cortex

Endocrine system

· Hormonal system

· Glands secrete hormones

· Use blood stream

TEST

Location -Dow 171

Time -Class time

Covers –Chapters 1-3 no genetics or statistics

Bring – Pencil No. 2 Pencil

CHIP ID

55 mc

5 short answers

Lecture and textbooks

SI Session 175