Abstract
Using a visual and an acoustic sample set that appeared to favour the auditory modality of the monkey subjects, in Experiment 1 retention gradients generated in closely comparable visual and auditory matching (go/no-go) tasks revealed a more durable short-term memory (STM) for the visual modality. In Experiment 2, potentially interfering visual and acoustic stimuli were introduced during the retention intervals of the auditory matching task. Unlike the case of visual STM, delay-interval visual stimulation did not affect auditory STM. On the other hand, delay-interval music decreased auditory STM, confirming that the monkeys maintained an auditory trace during the retention intervals. Surprisingly, monkey vocalizations injected during the retention intervals caused much less interference than music. This finding, which was confirmed by the results of Experiments 3 and 4, may be due to differential processing of “arbitrary” (the acoustic samples) and species-specific (monkey vocalizations) sounds by the sub...
Published Version
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