Visual-motor integration
Visual motor functions:
Observing visual-motor integration
Provides information about the child’s:
How the child carries out the test can be critical
Child’s style of responding:
* Dealing with frustration
* Correcting of errors
* Concentration and attention
* Planning and organization
* Motivation
* Encouragement
* Time to complete… perfectionism?
Fine motor skill:
* How the child holds the pencil
* Handedness
* Signs of tremor / holding pencil tightly
* Shifting posture / arm position
Visual integration:
* Traces designs with finger before drawing them
* Reorients paper or card so design is on a tilt
* Difficulty with the parts of designs
* What part of the design does the child draw first?
* Are parts integrated into the whole?
* Does the child spot differences between his drawing and the example?
How does the brain
integrate information?
4 NETWORKS FOR EVERYDAY FUNCTION
Brain networks share information with one another constantly
Several brain networks are involved in everyday function
Disruptions (due to injury, psychological distress, illness) can cause
poor information integration within a network and between networks
Visual-perceptual / Visual-motor Tasks
How does the brain integrate information?
White matter
Axon bundles - highways that connect one brain region to another
Visual-perceptual / Visual-motor Tasks
1. Visual perception with motor response
Visual perception with motor response:
1. The Bender-Gestalt Test
2. Beery Visual-Motor Integration
* Pencil and paper copying tests
* Untimed
3. NEPSY II > NEuroPSYchological test for children
o Route finding subtest
Visual Perceptual Tests
without motor response
Visual perception without motor response
1. NEPSY II (Arrows subtest – which arrow will hit the bullseye?)
* Identification of poor visuospatial skills: judging line orientation, direction,
angularity, and estimating distance
–Test whether a child can judge line orientation visually - which arrow points directly to the target
Tests of Motor Skills
Motor skills impaired due to:
* Motor planning
* Physical dexterity
* … Or combination of both
TBI:
* Ability to perform motor tasks quickly decreases corresponding to the severity of closed head injury
* Common effect = reduced fine motor skills – particularly timed motor tasks
To assess:
* Use tests that do not have a visual-perceptual component so that poor visualperceptual skills do not confound the findings (e.g. Halstead-Reitan Finger Oscillation
Test)
Interpreting performance
Visual-motor tests require fine motor skills, perceptual discrimination
ability, and ability to integrate perceptual and motor processes
Poor performance may reflect:
* Misperception
* Poor fine motor control
* Integrative processing difficulties
* Impulsivity / poor planning
(executive function)
Poor performance can be associated with:
* Maturational delay
* Limited intellectual stimulation
* Unfamiliarity with testing situations
* Neurological impairment
The Bender Visual-Motor Gestalt Test
Bender-Gestalt outcomes and interpretations:
* Child must copy pencil drawings
* Scored based on errors
* Koppitz (1975) generated a scoring method
Koppitz Method
Four category system used to classify errors
1. Distortion of shape
2. Rotation
3. Integration difficulties
4. Preservation
Scoring:
* 1 point per error
* Points are summed to obtain a total error score which is compared to aged normative data. Percentile norms are available for children aged 5 through
11-11 years.
Koppitz Method
Four category system used to classify errors
Compensatory mechanisms
Even in the absence of errors, clinicians can observe deficits by noticing a number of compensatory mechanisms
Visual-motor tests require 3 skills/abilities
fine motor skills,
perceptual discrimination
ability, and
ability to integrate perceptual and motor processes