<unk>  occurs when the perception of one sound is affected by the presence of another sound.<unk>  in the frequency domain is known as simultaneous<unk> , frequency<unk>  or spectral<unk> .<unk>  in the time domain is known as temporal<unk>  or non-simultaneous<unk> .
Auditory masking
Audio-visual entrainment
Binocular rivalry
Fusional vergence
Scotopic vision
Auditory exclusion
Retinal summation
Photopic vision