Multisensory Integration in Apparent Motion Perception (Abstract)
by , , , ,
Abstract:
Apparent motion (AM) is the illusion of a single moving stimulus when discrete stimuli are presented in rapid succession. In previous investigations we found that visual stimuli influence auditory AM perception. In the present investigation we tested the complete range auditory-visual interactions in AM perception by investigating both the influence of visual stimuli on auditory AM and of auditory stimuli on visual AM perception. The experimental setup consisted of stationary sound-light sources, on which AM sequences were presented. The participants had to perform a standard classification task after each stimulus sequence. We found both a facilitation of auditory AM perception by complementing the auditory sequence with visual stimuli and a facilitation of visual AM perception by complementing the visual sequence with auditory stimuli: if stimuli of one modality are added to fill the spatial and temporal gaps of the other modality’s trajectory, we find an increase of the range of SOAs at which continuous motion is perceived. We discuss different models of neural organization. In contrast to the often observed dominance of one sensory system over the other, the effect occurs symmetrically. This supports the notion of an amodal AM interpolation subsystem, which processes visual and auditory stimuli on par.
Reference:
Multisensory Integration in Apparent Motion Perception (Abstract) (T. Kluss, N. Schult, K. Schill, M. Fahle, C. Zetzsche), 2010.
Bibtex Entry:
@Misc{Kluss2010,
  author   = {T. Kluss and N. Schult and K. Schill and M. Fahle and C. Zetzsche},
  title    = {Multisensory Integration in Apparent Motion Perception (Abstract)},
  year     = {2010},
  abstract = {Apparent motion (AM) is the illusion of a single moving stimulus when discrete stimuli are presented in rapid succession. In previous investigations we found that visual stimuli influence auditory AM perception. In the present investigation we tested the complete range auditory-visual interactions in AM perception by investigating both the influence of visual stimuli on auditory AM and of auditory stimuli on visual AM perception. The experimental setup consisted of stationary sound-light sources, on which AM sequences were presented. The participants had to perform a standard classification task after each stimulus sequence. We found both a facilitation of auditory AM perception by complementing the auditory sequence with visual stimuli and a facilitation of visual AM perception by complementing the visual sequence with auditory stimuli: if stimuli of one modality are added to fill the spatial and temporal gaps of the other modality’s trajectory, we find an increase of the range of SOAs at which continuous motion is perceived. We discuss different models of neural organization. In contrast to the often observed dominance of one sensory system over the other, the effect occurs symmetrically. This supports the notion of an amodal AM interpolation subsystem, which processes visual and auditory stimuli on par.},
  keywords = {former_other},
}