............................................................................................... v Introduction............................................................................................. 1 Review of the literature ............................................................................... 3 Auditory speech perception ............................................................

 Background: According to previous studies, most of the speech recognition disorders in older adults are the results of deficits in audibility and auditory temporal resolution. In this paper, the effect of ageing on timecompressed speech and auditory temporal resolution by word recognition in continuous and interrupted noise was studied. Methods: A time-compressed speech test (TCST) w...

It has been found that auditory-visual speech perception differs over languages, particularly between English and Japanese speakers. This difference emerges due to increased use of visual information by English speakers between 6 and 8 years [14]. This study investigates the linguistic factors that may cause changes in auditory-visual speech perception development. Children aged between 5 and 8...

Perception results are presented that address the role of Lombard speech in auditory and audiovisual speech perception. Basically, visual enhancement neutralizes the advantage of Lombard speech observed for auditory perception. It remains an open question whether or not Lombard speech is preferable for perception studies of speech in noise.

The human ability to follow speech gestures through the visual modality is a core component of speech perception. Remarkably, speech can be perceived not only by the ear and by the eye but also by the hand, with speech gestures felt from manual tactile contact with the speaker’s face. In the present study, early crossmodal interactions were investigated by comparing early auditory evoked potent...

Studies of the McGurk effect demonstrate that observers integrate auditory information with visual information from a talker’s face during speech perception. The findings from these studies pose challenges for theories of speech perception that must account for how and why the auditory and visual information are integrated. One theoretical issue concerns the objects of speech perception. Some r...

In face-to-face conversation speech is perceived by ear and eye. We studied the prerequisites of audio-visual speech perception by using perceptually ambiguous sine wave replicas of natural speech as auditory stimuli. When the subjects were not aware that the auditory stimuli were speech, they showed only negligible integration of auditory and visual stimuli. When the same subjects learned to p...