Heading recovery from optic flow: comparing performance of humans and computational models.

This finding was supported by statistical analyses in the form of multiple weighted t -tests (Bland and Kerry, 1998 ) conducted within each noise condition revealing highly significant differences between the thresholds in the 5 and 50 dots per frame conditions for all three noise conditions but no differences between thresholds in the other dots per frame conditions (see Table 1 ).

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