Neuronal Effects of L2 Speech Perception and Second Language Acquisition

Dear Colleagues,

Speech perception in second language (L2) acquisition has been a topic of intrigue for decades, underpinned by seminal findings on bilingual brain plasticity and the debated Critical Period Hypothesis. Advances in neuroimaging have illuminated how our brains process non-native phonetic contrasts, elucidating structural differences in bilingual brains and distinguishing between early and late L2 learners.

This Special Issue aims to explore the intricacies of the neural underpinnings of L2 speech perception; its interactions with the quality and quantity of input, proficiency, naturalistic versus classroom exposure, laboratory training, etc.; and the influences of first language (L1) segmental and prosodic systems. We seek to understand not just how L2 speech sounds are processed but also how they integrate and interact with native language structures.

Recent advancements in the field have utilized High-Variability Phonetic Training (HVPT) to refine the phonetic discrimination skills of L2 learners. Through using cutting edge imaging techniques such as diffusion tensor imaging, researchers have been able to map the white matter tracts pivotal to L2 speech perception. Concurrently, as the realm of neuromodulation expands, there is a growing interest in harnessing techniques like Transcranial Magnetic Stimulation (TMS) and transcranial Direct Current Stimulation (tDCS) to elucidate the involvement of motor regions in the brain during the perception of non-native speech.

We invite contributions that focus on the neurocognitive effects of L2 speech perception. Papers examining the role of individual differences, encompassing factors such as age, proficiency, input quality and quantity, laboratory training, cognitive abilities, etc., are particularly welcome. We also encourage submissions that employ multimodal approaches, merging neuroimaging with techniques like eye-tracking, as well as studies that explore the intricacies of multilingual speech perception through computer modeling.

Dr. Ratree Wayland
Guest Editor

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• L2
• speech
• perception
• processing
• neuronal effects
• age
• exposure
• input