Can visual perception be used to estimate body part angles?

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      <subfield code="a">This research was conducted to examine the errors associated with judging postural angles from videotapes. A method was devised whereby different shoulder flexion positions were displayed to the subjects; they were then asked to report the perceived angles which closely matched the shoulder flexion angle displayed on a TV screen</subfield>
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      <subfield code="g">Vol. 36, nº 4, April 1993 ; p. 323-329</subfield>
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