Systematic diagonal and vertical errors in antisaccades and memory-guided saccades
Studies of memory-guided saccades in monkeys show an upward bias, while studies of antisaccades in humans show a diagonal effect, a deviation of endpoints toward the 45° diagonal. To determine if these two different spatial biases are specific to different types of saccades, we studied prosaccades,...
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| Główni autorzy: | , , |
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| Format: | Książka |
| Wydane: |
Bern Open Publishing,
2010-09-01T00:00:00Z.
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| Hasła przedmiotowe: | |
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| Streszczenie: | Studies of memory-guided saccades in monkeys show an upward bias, while studies of antisaccades in humans show a diagonal effect, a deviation of endpoints toward the 45° diagonal. To determine if these two different spatial biases are specific to different types of saccades, we studied prosaccades, antisaccades and memory-guided saccades in humans. The diagonal effect occurred not with prosaccades but with antisaccades and memory-guided saccades with long intervals, consistent with hypotheses that it originates in computations of goal location under conditions of uncertainty. There was a small upward bias for memory-guided saccades but not prosaccades or antisaccades. Thus this bias is not a general effect of target uncertainty but a property specific to memory-guided saccades. |
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| Deskrypcja: | 10.16910/jemr.3.3.5 1995-8692 |