Tonic/Brainstem Reflexes

Question 1

ATNR

Answer 1

rotate head on way - flexion of skull limbs, extension of jaw limbs.
Birth - 4-6mo.

Question 2

STNR

Answer 2

flexion or extension of head. Flexion: flexion of arms, extension of legs. Extension: extension of arms, flexion of legs.
4-6mo - 8-12mo.

Question 3

Symmetrical Tonic Labyrinthine

Answer 3

Prone or Supine. Prone: increased flexor tone, flexion of all limbs. Supine: extension of all limbs.
Birth - 6mo.

Question 4

Positive Support

Answer 4

Push ball of foot in upright position. Rigid extension (co-contraction) of LEs.
Birth - 6mo.

Question 5

Associated Reactions

Answer 5

Resisted voluntary mvmt in any part of body - involuntary movement in resting extremity.
Birth-3mo - 8-9yrs.