CLICK HERE TO SEE QUICKTIME MOVIE OF FISH OPTOKINETIC RESPONSE
Optokinetic nystagmus responses of a wild-type zebrafish larva (right) and a noa mutant larva (left). The fish are immobilized in methyl cellulose and they are responding to vertical alternating black and white stripes moving across their visual fields. The noa mutant was isolated by Susan Brockerhoff in a screen for recessive mutations that affect the zebrafish visual response. The noa mutant appears to be morphologically indistinguishable from the wild-type fish but it has an abnormal electroretinogram. For more details see Brockerhoff et al. 1995. ( Video by S. Brockerhoff and titles by S. Hurley)
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