| The
effect of lesions |
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| • | Monkeys
with collicular or frontal eye field lesions |
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| make
saccades with a slightly longer reaction time. |
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| • | Monkeys
with combined lesions cannot make |
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| saccades
at all. |
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| • | Humans
with parietal lesions neglect visual stimuli, |
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| and
make slightly hypometric saccades with longer |
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| reaction
times. Often their saccades are normal: if |
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| they
can see it they can make saccades to it. |
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| • | Humans
with frontal lesions cannot make |
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| antisaccades. |
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