Browsing BCBL-Publications by Author "Luthra, Sahil"
Now showing items 1-9 of 9
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Brain-behavior relationships in incidental learning of non-native phonetic categories
Luthra, Sahil; Fuhrmeister, Pamela; Molfese, Peter J.; Guediche, Sara; Blumstein, Sheila E.; Myers, Emily B. (Brain and Language, 2019)Research has implicated the left inferior frontal gyrus (LIFG) in mapping acoustic-phonetic input to sound category representations, both in native speech perception and non-native phonetic category learning. At issue is ... -
Contra assertions, feedback improves word recognition: How feedback and lateral inhibition sharpen signals over noise
Magnuson, James S.; Crinnion, Anne Marie; Luthra, Sahil; Gaston, Phoebe; Grubb, Samantha (ELSEVIER, 2024)Whether top-down feedback modulates perception has deep implications for cognitive theories. Debate has been vigorous in the domain of spoken word recognition, where competing computational models and agreement on at least ... -
Does signal reduction imply predictive coding in models of spoken word recognition?
Luthra, Sahil; Li, Monica Y. C.; You, Heejo; Brodbeck, Christian; Magnuson, James S. (Psychonomic Bulletin & Review, 2021)Pervasive behavioral and neural evidence for predictive processing has led to claims that language processing depends upon predictive coding. Formally, predictive coding is a computational mechanism where only deviations ... -
Lexical Information Guides Retuning of Neural Patterns in Perceptual Learning for Speech
Luthra, Sahil; Correia, João M.; Kleinschmidt, Dave F.; Mesite, Laura; Myers, Emily B. (Journal of Cognitive Neuroscience, 2020)A listener's interpretation of a given speech sound can vary probabilistically from moment to moment. Previous experience (i.e., the contexts in which one has encountered an ambiguous sound) can further influence the ... -
Listener expectations and the perceptual accommodation of talker variability: A pre-registered replication
Luthra, Sahil; Saltzman, David; Myers, Emily B.; Magnuson, James S. (Attention, Perception, & Psychophysics, 2021)Researchers have hypothesized that in order to accommodate variability in how talkers produce their speech sounds, listeners must perform a process of talker normalization. Consistent with this proposal, several studies ... -
Neural substrates of subphonemic variation and lexical competition in spoken word recognition
Luthra, Sahil; Guediche, Sara; Blumstein, Sheila E.; Myers, Emily B. (Language, Cognition and Neuroscience, 2019)In spoken word recognition, subphonemic variation influences lexical activation, with sounds near a category boundary increasing phonetic competition as well as lexical competition. The current study investigated the ... -
Right Posterior Temporal Cortex Supports Integration of Phonetic and Talker Information
Luthra, Sahil; Magnuson, James S.; Myers, Emily B. (MIT PRESS, 2023)Though the right hemisphere has been implicated in talker processing, it is thought to play a minimal role in phonetic processing, at least relative to the left hemisphere. Recent evidence suggests that the right posterior ... -
Robust Lexically Mediated Compensation for Coarticulation: Christmash Time Is Here Again
Luthra, Sahil; Peraza-Santiago, Giovanni; Beeson, Keia’na; Saltzman, David; Crinnion, Anne Marie; Magnuson, James S. (Cognitive Science, 2021)A long-standing question in cognitive science is how high-level knowledge is integrated with sensory input. For example, listeners can leverage lexical knowledge to interpret an ambiguous speech sound, but do such effects ... -
Using TMS to evaluate a causal role for right posterior temporal cortex in talker-specific phonetic processing
Luthra, Sahil; Mechtenberg, Hannah; Giorio, Cristal; Theodore, Rachel M.; Magnuson, James S.; Myers, Emily B. (ELSEVIER, 2023)Theories suggest that speech perception is informed by listeners’ beliefs of what phonetic variation is typical of a talker. A previous fMRI study found right middle temporal gyrus (RMTG) sensitivity to whether a phonetic ...