Controls left hand faces gazzaniga experiment o man

Controls left hand
 Faces
 Gazzaniga Experiment
o Man with two brains
 Evidence of Lateralization
 Birth
o Most turn head to right
o ¼ of babies clearly prefer grasping with right hand
o Show more left hemispheric response to speech sounds
 5-12 months
o Left hemisphere –
 Responds to speech sounds

 Active when babbling
 Early life
o 9/10 individuals are right handed
 Left Handedness
o If both parents are right handed, only 2/100
o If one parent is left handed, 17/100
o If both parents left handed, 46/100
 SLEEP & MEMORY
o Types of sleep in babies
 Quiet sleep
 Active sleep w/ movements and irregular breathing
 Drowsy
 Non-Alert waking
 Fussy or crying
o Newborns
 50% of sleep = REM (rapid eye movement)
 Sleep 70% of day
 2-3 hours of alert inactivity
o 6 months old: 25-30% of sleep is REM
 Children and Adults spend 20% of sleep in REM
o Functions of REM
 Brain is active
 Internal stimulation from PGO spikes
 Visual, auditory, motor areas active
 PFC active
o Memory consolidation (stage 5 REM sleep)
 Primed hippocampus
 Theta Waves & repetitive firing
o Functions of REM
 Hippocampus
 Part of the Limbic System
 Memory Structure
 Theta Waves
