Joint position error test systems and methods

An apparatus comprising:

• a processor;
• and
• non-transitory computer readable media comprising instructions executable by the processor to:
• determine, via a positional sensor, an orientation of a head of a test subject;
• determine that the head of the test subject is in a first position;
• obtain first sensor data from the positional sensor, wherein first sensor data is indicative of the orientation of the head of the test subject in the first position;
• determine that the head of the test subject is in a second position after a rotation has been performed by the head of the test subject;
• and
• obtain second sensor data from the positional sensor, wherein second sensor data is indicative of the orientation of the head of the test subject in the second position.

A method comprising:

• determining, via one or more positional sensors, that a head of a test subject is in a first position;
• obtaining first sensor data from the one or more positional sensors, wherein first sensor data is indicative of an orientation of the head of the test subject in the first position;
• determining, via the one or more positional sensors, that the head of the test subject is in a second position;
• obtaining second sensor data from the one or more positional sensors, where second sensor data is indicative of the orientation of the head of the test subject in the first position;
• determining a position error based on the first sensor data and the second sensor data, wherein the position error is indicative of a deviation of the orientation of the head of the test subject at the second position from the orientation of the head of the test subject at the first position;
• and
• determining a condition of the test subject based on the position error.