According to Werner's hypothesis (Zietz and Werner, 1928 Zeitschrift fÏr Psychologie 105 226 ^ 249), the phenomenal concomitance of two dynamic events (visual and auditory) gives rise to an intermodal unitary event. Zietz and Werner showed that a hardly noticeable apparent movement of a visual stimulus became more evident when a sound event was presented simulta- neously. Other authors, for example Staal and Donderi (1983 American Journal of Psychology 1 95 ^ 105), did not always obtain the same results. The purpose of the present work was to investigate the effect of different sounds on a visual bistable event: two different apparent movements can be seen inside a black frame: a `phi' move- ment, ie a small square moving from left to the right, or a `gamma' polarised movement, ie an expansion of the small square toward the centre of the frame from both sides in succession. I used (i) continuous, (ii) increasing and (iii) decreasing in frequency sounds, and (iv) two short sounds in succession. `Gamma' polarised movement was seen only in the latter condition. On the other hand, the degree of visibility of the `phi' movement increased by adding sound with dynamic qualities (increasing and decreasing in frequency). These results are in accord with Werner's hypothesis; a greater probability of one perceptual solution compared to the other was observed when the auditory and the visual events were phenomenally congruent.

Parovel, G. (1998). The effect of different sounds on visual apparent movement. In Perception (Supplement) (pp.136-136).

The effect of different sounds on visual apparent movement

PAROVEL, GIULIA
1998-01-01

Abstract

According to Werner's hypothesis (Zietz and Werner, 1928 Zeitschrift fÏr Psychologie 105 226 ^ 249), the phenomenal concomitance of two dynamic events (visual and auditory) gives rise to an intermodal unitary event. Zietz and Werner showed that a hardly noticeable apparent movement of a visual stimulus became more evident when a sound event was presented simulta- neously. Other authors, for example Staal and Donderi (1983 American Journal of Psychology 1 95 ^ 105), did not always obtain the same results. The purpose of the present work was to investigate the effect of different sounds on a visual bistable event: two different apparent movements can be seen inside a black frame: a `phi' move- ment, ie a small square moving from left to the right, or a `gamma' polarised movement, ie an expansion of the small square toward the centre of the frame from both sides in succession. I used (i) continuous, (ii) increasing and (iii) decreasing in frequency sounds, and (iv) two short sounds in succession. `Gamma' polarised movement was seen only in the latter condition. On the other hand, the degree of visibility of the `phi' movement increased by adding sound with dynamic qualities (increasing and decreasing in frequency). These results are in accord with Werner's hypothesis; a greater probability of one perceptual solution compared to the other was observed when the auditory and the visual events were phenomenally congruent.
1998
Parovel, G. (1998). The effect of different sounds on visual apparent movement. In Perception (Supplement) (pp.136-136).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/21689
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