1. Dynavision Normative Data for Reaction Time
Principal Investigator: Lori Dryg, MA, CCC-SLP CBIS
Sub-Investigators:
Cherie Blackwell, OTR/L, CHT; Sue Clemens, OTR/L, CBIS; Kristen Mandle, OTR/L; Kathy Cary, COTA/L; Jon Lemke, PhD

2. What is the Dynavision used for?
Originally designed as a device to improve visual skills and eye hand coordination of athletes.
Tiger Woods
Professional Hockey and Football Players
Rehabilitation
Device provides the same training benefits to persons whose visual and motor function has been compromised by injury or disease
Stroke
TBI
Spinal Cord Injury
ADD

3. Benefits of Dynavision
Improve visual and cognitive skills
Hemi inattention
Left neglect
Processing speed
Divided attention and concentration
Improve Activities of Daily Living
Driving
Reading
Managing finances
School performance

4. Mallard Jersey Auction
On March 17, 2013, the Quad City Mallard’s Jersey Auction contributed $19,745 toward purchase of the Dynavision equipment!

5. Dynavision Video

6. Research Purpose No established norms for Dynavision equipment.
Establishing norms for visual reaction, physical response and motor response times will assist therapists in properly assessing and treating visual perceptual deficits.

7. Study Objectives
To determine the visual reaction speed of adults in age categories 18 – 40, 41 – 59 and years, using the Dynavision D2 Visuomotor Training System
To determine the physical response speed of adults in age categories 18 – 40, 41 – 59 and years, using the Dynavision D2 Visuomotor Training System
To determine the motor response time of adults in age categories 18 – 40, 41 – 59 and years, using the Dynavision D2 Visuomotor Training System

8. Methodology Cross-sectional, descriptive 300 participants
100 in each of the three age categories
Inclusion Criteria
Exclusion Criteria
The study will include up to 300 participants, 100 in each of the three age categories. The research team will begin recruitment with the age group. Once the recruitment goal of 100 participants is reached in this age category, the research team will analyze the data. This will help to inform the recruitment goals and data analysis for the rest of the study groups.
Inclusion criteria:
Adults ages years old
Exclusion criteria:
Previous Neurological impairment
History of seizures
Partial to full blindness
Cognitive Impairments (including but not limited to: moderate to severe dementia, inability to follow simple directives)
Hand numbness
Inability to reach the entire range of the Dynavision apparatus (as tested by the Bi-lateral Upper Extremity Range of Motion screening)

9. WE NEED YOU!!!! Recruitment Flyers Local newspaper articles
Newsletters
Word-of-mouth to families and patients in the Outpatient Physical Rehabilitation facility
WE NEED YOU!!!!
Flyers distributed throughout the community (e.g., churches, gyms, senior centers)
Bettendorf Library, Palmer Hills Retirement Home, HYVEE, YMCA, Life Fitness Center
Local newspaper articles
Genesis Webpage/Facebook
Newsletter sent out to Genesis staff members
Letter sent via ?, Ambrose faculty and students
Word-of-mouth to families and patients in the Outpatient Physical Rehabilitation facility

10. Data Collection Initial Intake Form Informed Consent
Standard Screening Form (i.e., past medical history, ROM screen)
Dynavision Reaction Speed Test
Practice
Recorded Results
Initial Intake Form
Participants will be asked to complete a short intake form that collects the following information: name, age, gender, race, educational background, hand dominance and use of corrective lenses.
Dynavision D2 Visuomotor Training System tests
Use a written protocol to instruct the participant on how to complete each test.
The participant will be asked to hold down a red button until a second red button lights up.
The participant will be told to quickly strike the second button then return back to the original red button and hold it down firmly until a third button illuminates. This will continue for 5 repetitions. First, the sub-investigator will illustrate how to complete the test. Then the sub-investigator will allow the participant to complete a practice test. The participant will then complete six different portions of the test, 3 for the right hand and 3 for the left hand.

11. Data Analysis
GHS Business Intelligence Center will analyze total reaction times across the 6 tasks for each age group to establish normal limits.
Identifying the parametric distribution of the data allowed use of a 50 patient sample, opposed to 400 otherwise.
Results to be announced upon completion of
data collection.
Data Analysis
Once data is transferred to the GHS Biostatistics Group, research team members will double enter the data and manage the databases, assign identification numbers to participants, perform edit diagnostics and prepare worksheets for analysis.
Data analysis will focus on the total reaction times across the 6 tasks. The first sample will be 100 adult volunteers at least 60 years old that satisfy sufficient inclusion/exclusion criteria to represent normal functioning in this population. In order to minimize the required sample the biostatistics team reviewed the parametric distributions of reaction times and currently expect to use the reciprocal normal (Moscoso Del Prado Martin, et al. 2009) to establish our normal limits, that is the biostatistics team will take the reciprocals of the total reaction times and use the mean ± 1.96*(standard deviation). Then they will take the inverse of the reciprocal which is the reciprocal so that the estimated normal limits are:
2.5th Percentile: (1/(mean+1.96*standard deviation); and
97.5th Percentile: (1/(mean-1.96*standard deviation).
Without identifying the parametric distribution of reaction times the study would require at least 400 participants. These estimates will serve as standards for stroke patients. Similar experiments will be run on younger subjects to establish normal limits for brain injury patients.

12. Initial Cohort 50 patients age 60+
Calculate time to complete all 6 tests
Take reciprocal of these values
Plot and test for normality
Find 2.5 and 97.5 percentiles

13. Results of Analysis Lower limit (2.5th percentile) is 21.8 seconds
Upper limit (97.5th percentile) is 43.5 seconds
Recommend that patients age 60+ recovering from stroke complete all 6 tests in at most 43.5 seconds

14. Barriers to Data Collection
Our equipment is not portable
Conducted during regular business hours
Men are more reluctant to participate
Full time employees trying to manage caseload and research
Convenience population fall in exclusion criteria

15. Volunteers Call 421-3460 to set up an appointment to volunteer!
Data collection began Fall 2014.
We have completed 1/3 of the study!!!
Call to set up an appointment to volunteer!

16. Questions!!!