Investigating perceptual features of electrode stimulation via a multidimensional scaling paradigm

2000 ◽  
Vol 108 (5) ◽  
pp. 2353-2365 ◽  
Author(s):  
Leslie M. Collins ◽  
Chandra S. Throckmorton
Keyword(s):  
Multidimensional Scaling ◽  
Perceptual Features ◽  
Electrode Stimulation

Perceptual Dimensions Underlying Vowel Lipreading Performance

1976 ◽  
Vol 19 (4) ◽  
pp. 796-812 ◽  
Author(s):  
Pamela L. Jackson ◽  
Allen A. Montgomery ◽  
Carl A. Binnie
Keyword(s):  
Multidimensional Scaling ◽  
Normal Hearing ◽  
Visual Similarity ◽  
Perceptual Features ◽  
Physical Measurements ◽  
Separation Feature

This study was concerned with the extraction, description, and verification of visual perceptual features underlying vowel lipreading performance. Ten viewers with normal hearing rated the visual similarity of pairs of 15 vowels and diphthongs presented in an /h_g/ context by four speakers. Multidimensional scaling techniques were used to extract potential perceptual features which were then labeled by the experimenters. The resulting perceptual dimensions were correlated with physical measurements of lip shape to evaluate the adequacy of the feature labels. The results indicated that the traditional extended-rounded vowel feature and a vertical lip separation feature were the characteristics most prominent in judging the stimuli. In addition, a feature related to overall area of maximum lip opening and two features unique to diphthong perception were tentatively identified.

Research Note on Perceptual Features and Auditory Representations

1987 ◽  
Vol 65 (3) ◽  
pp. 837-838
Author(s):  
Robert Allen Fox ◽  
Jean Booth
Keyword(s):  
Multidimensional Scaling ◽  
Perceptual System ◽  
Research Note ◽  
Perceptual Space ◽  
Formant Frequency ◽  
Acoustic Data ◽  
Perceptual Features ◽  
The Absolute

It has been argued that bark-scale transformed formant frequency values more accurately reflect auditory representations of vowels in the perceptual system than do the absolute physical values (in Hertz). In the present study the perceptual features of 15 monophthongal and diphthongal vowels (obtained using multidimensional scaling) were compared with both absolute and bark-scale transformed acoustic vowel measures. Analyses suggest that bark-transformation of the acoustic data does not necessarily produce better predictions of the vowels' perceptual space.

Is Multidimensional Scaling Magic or Science?

1988 ◽  
Vol 33 (10) ◽  
pp. 874-875 ◽  
Author(s):  
James O. Ramsey
Keyword(s):  
Multidimensional Scaling
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