abnormal neurophysiology
abnormal visual behavior
photoreceptor cell R1
photoreceptor cell R2
photoreceptor cell R3
photoreceptor cell R4
photoreceptor cell R5
photoreceptor cell R6
Mutants have defects in the on/off transients of the electroretinogram. Histamine-activated conductance in mutant laminar L1/L2 neurons appears indistinguishable from wild type.
Same basic phenotype as inaA1; also, inaB1 lacks on and off transient spikes of electroretinogram (ERG).