scholarly journals Hierarchical coupling of neuronal oscillations and their role in sensory processing

2008 ◽  
Vol 2 ◽  
Author(s):  
Schroeder C E E
Keyword(s):  
Sensory Processing ◽  
Neuronal Oscillations

scholarly journals An oscillating computational model can track pseudo-rhythmic speech by using linguistic predictions

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Sanne ten Oever ◽  
Andrea E Martin
Keyword(s):  
Computational Model ◽  
Sensory Processing ◽  
Empirical Data ◽  
Temporal Dynamics ◽  
Language Models ◽  
Brain Oscillations ◽  
Neuronal Oscillations ◽  
Speech Input ◽  
Temporal Phase ◽  
Speech Time

Neuronal oscillations putatively track speech in order to optimize sensory processing. However, it is unclear how isochronous brain oscillations can track pseudo-rhythmic speech input. Here we propose that oscillations can track pseudo-rhythmic speech when considering that speech time is dependent on content-based predictions flowing from internal language models. We show that temporal dynamics of speech are dependent on the predictability of words in a sentence. A computational model including oscillations, feedback, and inhibition is able to track pseudo-rhythmic speech input. As the model processes, it generates temporal phase codes, which are a candidate mechanism for carrying information forward in time. The model is optimally sensitive to the natural temporal speech dynamics and can explain empirical data on temporal speech illusions. Our results suggest that speech tracking does not have to rely only on the acoustics but could also exploit ongoing interactions between oscillations and constraints flowing from internal language models.

Magnitude Estimation and Cross-Modal Matching of Lingual Vibrotactile and Auditory Sensation

1989 ◽  
Vol 32 (3) ◽  
pp. 698-702 ◽  
Author(s):  
Daniel Harris ◽  
Donald Fucci ◽  
Linda Petrosino
Keyword(s):  
Auditory Stimulus ◽  
Magnitude Estimation ◽  
Sensory Processing ◽  
Test Site ◽  
Systematic Investigation ◽  
Thenar Eminence ◽  
Stimulus Range ◽  
Psychophysical Scaling ◽  
Scaling Methods ◽  
Response Biases

The present experiment was a preliminary attempt to use the psychophysical scaling methods of magnitude estimation and cross-modal matching to investigate suprathreshold judgments of lingual vibrotactile and auditory sensation magnitudes for 20 normal young adult subjects. A 250-Hz lingual vibrotactile stimulus and a 1000-Hz binaural auditory stimulus were employed. To obtain judgments for nonoral vibrotactile sensory magnitudes, the thenar eminence of the hand was also employed as a test site for 5 additional subjects. Eight stimulus intensities were presented during all experimental tasks. The results showed that the slopes of the log-log vibrotactile magnitude estimation functions decreased at higher stimulus intensity levels for both test sites. Auditory magnitude estimation functions were relatively constant throughout the stimulus range. Cross-modal matching functions for the two stimuli generally agreed with functions predicted from the magnitude estimation data, except when subjects adjusted vibration on the tongue to match auditory stimulus intensities. The results suggested that the methods of magnitude estimation and cross-modal matching may be useful for studying sensory processing in the speech production system. However, systematic investigation of response biases associated with vibrotactile-auditory psychophysical scaling tasks appears to be a prerequisite.

Examining Attention and Preattentive Sensory Processing With Onset and Offset Cues

2004 ◽  
Author(s):  
Michael D. Dodd ◽  
Timothy N. Welsh ◽  
Jay Pratt
Keyword(s):  
Sensory Processing
Sign in / Sign up

Export Citation Format

Share Document