vision/eye
• many photoreceptor ribbon synapse complexes are disintegrated
• in adults photoreceptor terminals containing spherical free floating ribbons are seen
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• significant reduction in b-wave amplitudes and prolongation of b-wave implicit times at all light intensities
• slight increase in a-wave amplitudes and prolongation of a-wave implicit times at medium light intensities
• peak power but not peak frequency of oscillatory potentials is reduced
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• mice take more time to reach the visible platform in a cued platform test in the Morris water maze; however, mice show a normal learning curve in this test and normal motor function indicating the delay is due to impaired vision
• in contrast, performance in a visual cliff test is similar to controls
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nervous system
• many photoreceptor ribbon synapse complexes are disintegrated
• in adults photoreceptor terminals containing spherical free floating ribbons are seen
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