Gain effects on performance using a head-controlled computer input device

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      <subfield code="a">The purpose of this study was to use a Fitts'task to (1) determine how control-display gain influences performance using a head-controlled computer input device; (2) compare relative sensitivity to gain and optimal gain between head control and hand-arm control; and (3) investigate control display gain interactions with other task factors including target width, movement amplitude and direction</subfield>
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      <subfield code="t">Ergonomics</subfield>
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      <subfield code="g">Vol. 35, nº 2, February 1992 ; p. 159-175</subfield>
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