The mirror box illusion: visuo-proprioceptive interaction and training effects in children with Spastic Hemiparetic Cerebral Palsy

The mirror box illusion: visuo-proprioceptive interaction and training effects in children with Spastic Hemiparetic Cerebral Palsy - The mirror box illusion in SHCP

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

NL-OMON

Registry ID

NL-OMON34769

Enrollment

Registered

2010-03-24

Start date

2010-05-01

Completion date

Unknown

Last updated

2024-05-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hemiplegia Spastic Hemiparetic Cerebral Palsy

Interventions

None listed

Eligibility

Age

2 Years to 17 Years

Inclusion criteria

Inclusion criteria: Clinical diagnosis of Spastic Hemiparetic Cerebral Palsy (SHCP; either left or right hemispheric damage) Age between 10 and 18 years IQ>80

Exclusion criteria

Exclusion criteria: Any neuromuscular disorders other than SHCP Pain in any of the upper extremities Neglect or visual impairments not corrected to normal Parents/guardians and/or child who do not speak Dutch or English well enough to participate

Design outcomes

Primary

Measure	Time frame
Experiment 1 Judging and Matching: During the judging task, the smallest detectable difference between the two hands will be determined. This smallest detectable difference is the threshold. In the matching task the difference at endpoint position (distance) and the difference in the elbow angle (measured with a goniometer) between both arms will be determined. The threshold of the judging tasks and the differences on the matching tasks will be taken as main study parameters. Experiment 2 One-way mirror: While performing the slit movement, the distance that is covered by the handle will be determined by means of the Optotrak system. This is called the movement deflection. In addition the relative phase will be calculated which indicates the symmetry between the two arms at each moment in time. Moreover, neuromuscular activation (i.e., mean neuromuscular activity, relative durations of eccentric, concentric, and isometric activity) will be measured by means of EMG. The main study parameters for this experiment are the movement deflection during the slit movement for the different conditions (mirror/glass) and the neuromuscular activation in the different conditions. Experiment 3 Learning: The movement deflection of the handle during the slit movement and the relative phase (measured with the Optotrak system) in the screen condition will be the main study parameters for the pre- and post-measurement. In addition the neuromuscular activation (i.e., mean neuromuscular activity, relative durations of eccentric, concentric, and isometric activity) while performing the slit movement in the screen condition and the error on the proprioceptive tasks (equal to experiment 1) for the pre- and post-measurement will be taken as main study parameters. Experiments 1, 2 & 3: The scores of the QUEST (Quality of Upper Extremity Skills Test).	—

Measure

Time frame

Experiment 1 *Judging and Matching*: During the judging task, the smallest detectable difference between the two hands will be determined. This smallest detectable difference is the threshold. In the matching task the difference at endpoint position (distance) and the difference in the elbow angle (measured with a goniometer) between both arms will be determined. The threshold of the judging tasks and the differences on the matching tasks will be taken as main study parameters. Experiment 2 *One-way mirror*: While performing the slit movement, the distance that is covered by the handle will be determined by means of the Optotrak system. This is called the movement deflection. In addition the relative phase will be calculated which indicates the symmetry between the two arms at each moment in time. Moreover, neuromuscular activation (i.e., mean neuromuscular activity, relative durations of eccentric, concentric, and isometric activity) will be measured by means of EMG. The main study parameters for this experiment are the movement deflection during the slit movement for the different conditions (mirror/glass) and the neuromuscular activation in the different conditions. Experiment 3 *Learning*: The movement deflection of the handle during the slit movement and the relative phase (measured with the Optotrak system) in the screen condition will be the main study parameters for the pre- and post-measurement. In addition the neuromuscular activation (i.e., mean neuromuscular activity, relative durations of eccentric, concentric, and isometric activity) while performing the slit movement in the screen condition and the error on the proprioceptive tasks (equal to experiment 1) for the pre- and post-measurement will be taken as main study parameters. Experiments 1, 2 & 3: The scores of the QUEST (Quality of Upper Extremity Skills Test).

—

Secondary

Measure	Time frame
Experiment 2: The time it takes before the hypothesized changes in relative phase and movement deflection are seen after the transition from mirror to glass or the other way around. Experiments 1, 2 & 3: The scores of the MACS and the WeeFIM.	—

Countries

Netherlands

Outcome results