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The canals lie
in roughly the
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same planes as
the extraocular
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muscles:
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Horizontal
canals: lateral and
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medial recti.
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LARP: left
vertical recti, right
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obliques.
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RALP: right
vertical recti, left
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obliques.
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Each canal
excites a pair of
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muscles and
inhibits a pair of
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muscles in its
plane. Its partner
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excites the
muscles it inibits,
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and vice-versa.
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