mortality/aging
N |
• born at expected Mendelian ratios
• survive to adulthood
|
behavior/neurological
N |
• no seizure-like movements
|
• smaller amplitude of horizontal optico kinetic reflex gain but timing is normal
• no adaptive increase in horizontal optico kinetic reflex gain at 10 weeks after 1 hour of exposure to screen oscillations
|
nervous system
N |
• cerebellar morphology is more or less normal
• climbing fiber distribution is normal at 10 weeks of age
• no abnormal enlargement of parallel fiber presynaptic terminals
|
• fewer dendritic branching points
• increased spine density in the distal dendritic region
|
• soma is smaller at 10 weeks of age but no degeneration is apparent
|
• thin at 10 weeks of age
|
• significantly increased parallel fiber EPSP at 10 weeks of age
|
• induction of long term depression by stimulation of parallel fibers and climbing fibers is blocked
• long term depression by direct depolarization of Purkinje cells is blocked
|
vision/eye
• smaller amplitude of horizontal optico kinetic reflex gain but timing is normal
• no adaptive increase in horizontal optico kinetic reflex gain at 10 weeks after 1 hour of exposure to screen oscillations
|