01 Flashcards
What four things are functional on the first day of life? Which is stronger than that seen in adults?
1) fixation to light/sound
2) withdrawal from odor
3) VOR (eyes opp to head) - STRONGER than in adults - NO OKN when newborn
4) ERG - shows LONG latency
T/F: in a premie, the ERG continues to show a long latency until the child grows to term
FALSE: just like in full-term babies, ERG does NOT rely on maturation (happens w/i the first week regardless of maturity)
Which five things occur w/i one MONTH of maturity?
1) optic flow - fast pattern of random noise=larger head withdrawal
2) reaching/grasping
3) collision avoidance
4) synced mvmt w/ speaker
5) facial imitation
by how many weeks can a child reach? are they good at grasping?
-at what age does R/G return but with much improvement/accuracy?
3 weeks - reaching
-CAN’T grasp (don’t open hand fast enough)
4-5 months
-Note: “walking” 3-wk old will prance
What actions take place when an infant is avoiding a collision? At what age does this happen?
- This response is based on which two things?
- Does collision avoidance include directionality?
eyes open, hands up, head back
~3 months
1) enlarging/looming target
2) dynamic stereoscopic change
-yes, if object will miss by ~6 inches, infant will withdraw AND move to opp side
synced mvmt occurs d/t which cells? Happens how early?
- which mirrored action most famous/early?
- will a baby imitate a person on TV?
mirror cells - just a few minutes old (even w/ terrible VA)
- sticking out tongue
- unlikely - mirroring occurs w/ REAL objects (real humans)
At what age…
- identification difficult w/o mvmt?
- identification possible w/o mvmt, but difficult/faint?
- relative easy of identification w/o mvmt?
- 1 month
- 2 months
- 6 months
kittens only respond to light @ what age? Due to which neuromods?
-When do human neuromodulators start working?
3 weeks
- NE, serotonin, dopamine
- humans: 5 1/2 WEEKS after CONCEPTION (long before birth)
