ArticleCortex; a journal devoted to the study of the nervous system and behavior2025
Rapid auditory and phonemic processing relies on the left planum temporale.
Article in Cortex; a journal devoted to the study of the nervous system and behavior, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Functional Networks in Developmental Dyslexia: Auditory Discrimination of Words and Pseudowords.NeuroSci · 2026Article
- Dissecting the Sublexical Route for Reading: Frontal and Parietal Networks Support Learned Orthography-to-Phonology Mappings.Neurobiology of language (Cambridge, Mass.) · 2026Article
- Decoding of frequency-modulated sweeps by core and belt neurons in the alert macaque auditory cortex.Journal of neurophysiology · 2025Article
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4 authors.
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Abstract
After initial bilateral acoustic processing of the speech signal, much of the subsequent language processing is left-lateralized, perhaps due to a left hemisphere (LH) advantage for rapidly unfolding components of speech. Here we investigated whether and where damage to the LH predicted impaired performance on judging the directionality of frequency modulated (FM) sweep stimuli that changed within short (25 msec) or longer (250 msec) temporal windows. Performance was significantly lower for stroke survivors (n = 50; 18 female) than controls (n = 61; 34 female) on FM Sweeps judgments, particularly on the short sweeps. Support vector regression lesion-symptom mapping revealed that part of the left planum temporale (PT) was related to worse performance on the short FM sweeps, controlling for performance on the long sweeps. We then investigated whether damage to this region related to diminished performance on stop consonant identification and pseudoword repetition, which theoretically depend on rapid auditory processing. Indeed, participants with PT lesions (PT lesion+, n = 24) performed worse than those without (PT lesion-, n = 26) on stop consonant identification and pseudoword repetition, controlling for lesion size and hearing ability. PT lesions impacted pseudoword repetition more than real word repetition, which is of interest because pseudowords rely solely on speech sound perception and sequencing, whereas words can also rely on lexical-semantic knowledge. We conclude that the left PT is a critical region for processing auditory information in short temporal windows, and it may also be an essential transfer point in auditory-to-linguistic processing.
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