Results IIISubject 1 Subject 2Eyes Opened Able to maintain balanceWobbled a bitArms wobbledLegs swayed a bitEyes Closed Body shakingFeet wobbleduncontrollablyStable
Results IISubject 1 Subject 2Eyes Opened Body adjusts to the side ofthe foot on the groundBody wobbledFoot on ground wobbledBody leaned towards thefoot on the groundEyes Closed Wobbled left and rightMoves about rapidlyPerson can’t seem to findcenter of gravitySwayed to the leftBody wobbleduncontrolably
Proprioceptive Sensations• Sensations relating to the physical state of thebody• Static position sense vs. Rate of movementsense
Cues Important in Spatial Orientation• Visual Cues– Slight linear or rotational movement of thebody, instantaneously shifts the visual images ofthe retina, and this information is relayed to theequilibrium center
Cues Important in Spatial Orientation• Vestibular cues– Proper orientation of our head, limbs, and entirebody is achieved by reflex signals originatingfrom the vestibular apparatus.
Cues Important in Spatial Orientation• Kinesthetic cues– Joint receptors of the neck– Pressure sensations from footpads (Baroreceptors)– Muscle spindles
Cues Important in Spatial Orientation• Exteroreceptiveinformation– Important when a personis in motion– Air pressure against thefront of the body signalsthat a force is opposingthe body in a directiondifferent from thatcaused by thegravitational pull; as aresult, the person leansforward to oppose this
Corrective motions for balanceThe body moves to a positionsuch that its center of gravityfalls on the same longitudinalaxis as that of its foundation