Audiovisual Bounce-Inducing Effect: Attention Alone Does Not Explain Why the Discs Are Bouncing
Audiovisual Bounce-Inducing Effect: Attention Alone Does Not Explain Why the Discs Are Bouncing
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DOI:
10.1037/a0013031
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发表时间:
2009-02-01
影响因子:
2.1
通讯作者:
Casco, Clara
中科院分区:
文献类型:
--
作者:
Grassi, Massimo;Casco, Clara
Two discs moving front opposite points in space. overlapping and stopping at the other disc's starting point, can be seen its either bouncing or streaming through each other. With silent displays, observers report the discs as streaming, whereas if a sound is played when the discs touch each other, observers report the discs as bouncing. The origin of the switch from streaming to bouncing response is not known yet. The sound either shifts perception toward that of an impact-elastic event (i.e.. a bounce) or subtracts the attention that is necessary to perceive the discs as streaming. We used either impact-similar (abrupt amplitude attack, gradual decay) or impact-dissimilar Sounds (gradual amplitude attack, abrupt decay) and found that the first sounds induce the bouncing response. whereas the latter, although as distracting as the first, tender streaming and bouncing responses equally frequent at most. We interpret the audiovisual bouncing effect as resulting from attention subtraction, which raises the number of bounce responses in comparison with silent displays. and from perception, which further increment,, the number of bounce responses and turns the response into a strong bounce response.