Hemispheric lateralization during spectral envelope perception is dynamic and individualized

2021 ◽  
Vol 150 (4) ◽  
pp. A145-A145
Author(s):  
Ann C. Eddins ◽  
Sittiprapa Isarangura ◽  
Robert A. Lutfi
Keyword(s):  
Hemispheric Lateralization ◽  
Spectral Envelope

Hemispheric Lateralization of Sound

2012 ◽  
Author(s):  
Lauren Kolker ◽  
Lesley Hathorn
Keyword(s):  
Hemispheric Lateralization

Hemispheric lateralization in reasoning

2015 ◽  
Vol 1359 (1) ◽  
pp. 47-64 ◽  
Author(s):  
Benjamin O. Turner ◽  
Nicole Marinsek ◽  
Emily Ryhal ◽  
Michael B. Miller
Keyword(s):  
Hemispheric Lateralization

Representation of Spectral and Temporal Envelope of Twitter Vocalizations in Common Marmoset Primary Auditory Cortex

2002 ◽  
Vol 87 (4) ◽  
pp. 1723-1737 ◽  
Author(s):  
Srikantan S. Nagarajan ◽  
Steven W. Cheung ◽  
Purvis Bedenbaugh ◽  
Ralph E. Beitel ◽  
Christoph E. Schreiner ◽  
...  
Keyword(s):  
Cortical Neurons ◽  
Social Contact ◽  
Primary Auditory Cortex ◽  
Common Marmoset ◽  
Spectral Envelope ◽  
Response Patterns ◽  
Temporal Envelope ◽  
Degraded Speech ◽  
Neurophysiological Data ◽  
Narrowband Channels

Cortical sensitivity in representations of behaviorally relevant complex input signals was examined in recordings from primary auditory cortical neurons (AI) in adult, barbiturate-anesthetized common marmoset monkeys ( Callithrix jacchus). We studied the robustness of distributed responses to natural and degraded forms of twitter calls, social contact vocalizations comprising several quasi-periodic phrases of frequency and AM. We recorded neuronal responses to a monkey's own twitter call (MOC), degraded forms of their twitter call, and sinusoidal amplitude modulated (SAM) tones with modulation rates similar to those of twitter calls. In spectral envelope degradation, calls with narrowband channels of varying bandwidths had the same temporal envelope as a natural call. However, the carrier phase was randomized within each narrowband channel. In temporal envelope degradation, the temporal envelope within narrowband channels was filtered while the carrier frequencies and phases remained unchanged. In a third form of degradation, noise was added to the natural calls. Spatiotemporal discharge patterns in AI both within and across frequency bands encoded spectrotemporal acoustic features in the call although the encoded response is an abstract version of the call. The average temporal response pattern in AI, however, was significantly correlated with the average temporal envelope for each phrase of a call. Response entrainment to MOC was significantly correlated with entrainment to SAM stimuli at comparable modulation frequencies. Sensitivity of the response patterns to MOC was substantially greater for temporal envelope than for spectral envelope degradations. The distributed responses in AI were robust to additive continuous noise at signal-to-noise ratios ≥10 dB. Neurophysiological data reflecting response sensitivity in AI to these forms of degradation closely parallel human psychophysical results on the intelligibility of degraded speech in quiet and noisy conditions.

Hemispheric lateralization in preattentive processing of speech sounds

1998 ◽  
Vol 258 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Kimmo Alho ◽  
John F. Connolly ◽  
Marie Cheour ◽  
Anne Lehtokoski ◽  
Minna Huotilainen ◽  
...  
Keyword(s):  
Hemispheric Lateralization ◽  
Speech Sounds ◽  
Preattentive Processing

scholarly journals Improvement of phonemic fluency following leftward prism adaptation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Patrizia Turriziani ◽  
Gabriele Chiaramonte ◽  
Giuseppa Renata Mangano ◽  
Rosario Emanuele Bonaventura ◽  
Daniela Smirni ◽  
...  
Keyword(s):  
Healthy Subjects ◽  
Clinical Impact ◽  
Language Ability ◽  
Prism Adaptation ◽  
Hemispheric Lateralization ◽  
Functional Studies ◽  
Phonemic Fluency ◽  
Executive Dysfunctions ◽  
New Strategies ◽  
Fluency Task

AbstractAnatomo functional studies of prism adaptation (PA) have been shown to modulate a brain frontal-parieto-temporal network, increasing activation of this network in the hemisphere ipsilateral to the side of prism deviation. This effect raises the hypothesis that left prism adaptation, modulating frontal areas of the left hemisphere, could modify subjects’ performance on linguistic tasks that map on those areas. To test this hypothesis, 51 healthy subjects participated in experiments in which leftward or rightward prism adaptation were applied before the execution of a phonemic fluency task, i.e., a task with strict left hemispheric lateralization onto frontal areas. Results showed that leftward PA significantly increased the number of words produced whereas rightward PA did not significantly modulate phonemic fluency. The present findings document modulation of a language ability following prism adaptation. The results could have a huge clinical impact in neurological populations, opening new strategies of intervention for language and executive dysfunctions.

Beyond bandlimited sampling of speech spectral envelope imposed by the harmonic structure of voiced sounds

2013 ◽  
Author(s):  
Hideki Kawahara ◽  
Masanori Morise ◽  
Tomoki Toda ◽  
Ryuichi Nisimura ◽  
Toshio Irino
Keyword(s):  
Spectral Envelope ◽  
Harmonic Structure
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