User's Manual

Table Of Contents
Page 20 of 29
environment can also serve as targets. The HCP can control how fast the ball travels towards the patient,
the distance the patient must reach to block the ball, and the number of balls to be kicked at the
patients.
Sub-Activity 3: Flying Fish
Flying fish is similar to Chuckleball where the patient must deflect a fish being pitched at them with their
head or hands. This may elicit a defensive response movement from the patient in VR. Fish may turn
from “good” blue fish which are supposed to be deflected to “bad” red spiky fish, which need to be
avoided. This requires extra cognitive processing to decide, under time pressure, which fish should be
contacted, and which should be avoided, in addition to predicting where the fish are coming and
integrating proper movement to accomplish the task.
TECHNICAL SPECIFICATIONS
Sensor Accuracy*
± 2 cm at a max distance of 75 cm
Sensor Precision*
2 cm or less
Latency
≤35 milliseconds
Operating Temperature
15 °C to 30 °C
Operating Pressure
102 kPa or less
Operating Relative Humidity
15% to 90%
Operating Elevation
2,500 meters or less
Transportation and Storage Temperature
0°C to 30 °C
Transportation and Storage Pressure
102 kPa or less
Transportation and Storage Relative Humidity
15% to 90%
Radio Module
Output power (EIRP**): 6.31 mW (8 dBm) max
Frequency Band: ISM (Industrial, Scientific, and
Medical)
Typical Center frequency: 2.44 GHz
Channel: 77 channels
Bandwidth: 2 MHz per channel
Modulation: GFSK (Gaussian frequency-shift
keying)
Data flow: Bi-directional
**EIRP = Equivalent Isotropic Radiated Power
*REAL System 2 is calibrated appropriately to detect movement in virtual reality space in relation to real
space accurately and precisely. Sensors will compute and display position at an accuracy of a 2 cm radius
with respect to real space at a max distance of 75 cm relative to the headset. Sensors will also
reproducibly compute position at a maximum deviation of a 2 cm radius for repeated movements at a
max distance of 75 cm relative to the headset. Please note that accuracy and precision specifications
contain limitations and are dependent on certain factors such as the amount of metal near the system.
For example, if the patient is in a metal wheelchair and cannot move to a non-metal chair, reduction in
accuracy and precision may occur.