The
Ontogeny of Human Neurologic Functions
|
Brain
Stage
|
Average
Time Frame
|
Vision
|
Auditory
|
Tactile
|
*
|
Highest
Level of Skill
|
*
|
Mobility
|
Language
|
Manual
|
| 12 |
6
years to peer level |
Skills
equal to or above peers and consistent w/ dominant hemisphere |
Skills
equal to or above peers and consistent w/ dominant hemisphere |
Skills
equal to or above peers and consistent w/ dominant hemisphere |
|
|
|
Skills
equal to or above peers and consistent w/ dominant hemisphere |
Skills
equal to or above peers and consistent w/ dominant hemisphere |
Skills
equal to or above peers and consistent w/ dominant hemisphere |
| 11 |
5-6
years |
Reading
books |
Sophisticated
concept of time and space |
Sophisticated
stereognosis
Sophisticated proprioception |
Hop,
skip, jump and other sophisticated skills |
Sophisticated
ability to express an abstract throught |
Spontaneous
writing of many words |
| 10 |
4-5
years |
Reading
initial books |
Conception
of sophisticated astract language |
Concepts
of solidity |
Run
and walk in complete cross pattern |
Ability
to participate in an organized conversation
Proper articulation |
Spontaneous
writing of several words |
| 9 |
3-4
years |
Reading
sentences |
Conception
of gramatical and idiomatic language |
Concepts
of shape |
Initial
walking in cross patern |
Structured
sentences
Advancing vocabulary |
Reproducing
symbols and words |
| 8 |
2-3
years |
Reading
phrases
Reading many words |
Conception
of worldly information leading to concept of time & space |
Concepts
of size |
Initial
running in cross patterns |
Initial
sentences
Many phrases |
Sophisticated
bimanual skills |
| 7 |
18-24
months |
Reading
several words
Identifying complex symbols
|
Understands
basic directions |
Concepts
of texture |
Walk
and run with arms down without pattern |
Initial
phrases
Many new words |
Bilateral
and simultaneous cortical opposition |
| 6 |
12-18
months |
Complete
convergence
Identifying simple abstracts |
Understands
many words and phrases |
Initial
stereognosis |
Walk
with arms in primitive balance role
Free standing
Cruising |
Several
meaningful words however pronounced |
Primitive
use of tools
Initial bimanual function |
| 5 |
9-12
months |
Initial
binocularity |
Understands
several single words |
Awareness
of third dimension |
Functional
creeping culminating in a cross pattern
Pull to stand |
Word
like sounds |
Bilateral
cortical opposition
Unilateral cortical opposition |
| 4 |
6-9
months |
Appreciation
of fine detail |
Appreciation
of environmental sounds |
Proprioceptive
ability as related to balance and space
Gnosis |
|
|
|
Initial
creeping
Assume and maintain quadruped |
Range
of expressive and meaningful sounds |
Mature
bilatera prehensile grasp |
| 3 |
3-6
months |
Seeing
gross detail
Unified occular movement |
Localization
of sound |
Localization
of touch |
Functional
crawling culimnating in a cross pattern |
Experimental
use of sounds |
Initial
prehensile grasp |
| 2 |
Birth
to 3 months |
Biocular
outline perception |
Response
to threatening sounds
Initial perception of sounds |
Awareness
of temp & discomfort
Early proprioception
Vital tactile |
|
|
|
Initial
crawling |
Vital
sounds |
Bilateral
vital release |
| 1 |
Birth |
Pupillary
reflex |
Startle
reflex |
Babinski
reflex |
|
|
|
Complete
movement of extremities |
Birth
cry |
Bilateral
grasp reflex |
Source:
Sandler & Brown
1980 Second ed. |
AFFERENT
SENSORY PATHWAYS |
|
|
|
EFFERENT
MOTOR PATHWAYS |
