The same ultra-rapid parallel brain dynamics underpin the production and perception of speech

Fairs, Amie; Michelas, Amandine; Dufour, Sophie; Strijkers, Kristof

doi:10.1101/2021.02.11.430723

Cited by 5 publications

(6 citation statements)

References 125 publications

(220 reference statements)

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“…Differences in polarity between pictures and words are not unusual and have previously been found in oral language experiments (e.g., Fairs et al, 2021), which supports the idea that task-related variables regulate not the presence of the effect but how lexical variables, such as lexical frequency, modulate the pattern of ERP components (e.g., Fischer-Baum et al, 2014;Strijkers et al, 2015).…”

Section: Discussionsupporting

confidence: 81%

Iconicity in sign language production: Task matters

Gimeno-Martínez

Baus

2022

Neuropsychologia

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The present study explored the influence of iconicity on sign lexical retrieval and whether it is modulated by the task at hand. Lexical frequency was also manipulated to have an index of lexical processing during sign production. Behavioural and electrophysiological measures (ERPs) were collected from 22 Deaf bimodal bilinguals while performing a picture naming task in Catalan Sign Language (Llengua de Signes Catalana, LSC) and a word-to-sign translation task (Spanish written-words to LSC). Iconicity effects were observed in the picture naming task, but not in the word-to-sign translation task, both behaviourally and at the ERP level. In contrast, frequency effects were observed in the two tasks, with ERP effects appearing earlier in the word-to-sign translation than in the picture naming task. These results support the idea that iconicity in sign language is not pervasive but modulated by task demands. As discussed, iconicity effects in sign language would be emphasised when naming pictures because sign lexical representations in this task are retrieved via semantic-to-phonological links. Conversely, attenuated iconicity effects when translating words might result from sign lexical representations being directly accessed from the lexical representations of the word.

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Section: Discussionsupporting

confidence: 81%

Iconicity in sign language production: Task matters

Gimeno-Martínez

Baus

2022

Neuropsychologia

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“…High frequency words elicited greater positivity compared to low frequency words starting at the 140-210ms time window. Differences in polarity between pictures and words are not unusual and have previously been found in oral language experiments (Fairs et al, 2021). Perhaps more surprising were the differences on the latency of the frequency effect in the two tasks.…”

Section: Discussionsupporting

confidence: 63%

Iconicity in Sign Language Production: Task Matters

Gimeno-Martínez¹,

Baus²

2021

Preprint

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The present study explored the influence of iconicity on sign lexical retrieval and whether its influence is modulated depending on the type of stimuli employed in the task. Lexical frequency was also included as a control variable indexing lexical processing. Behavioural and electrophysiological measures (ERPs) were collected from 22 Deaf bimodal bilinguals while performing a picture naming task in Catalan Sign Language (LSC) and a word-to-sign translation task (Spanish written-words to LSC). Iconicity effects were observed in the picture naming task, but not in the word-to-sign translation task, both behaviourally and at the ERP level. In contrast, frequency effects were observed in the two tasks, with ERP effects appearing earlier in the word-to-sign translation than in the picture naming task. These results support the idea that iconicity in sign language is not pervasive but modulated by the stimuli that trigger lexical access. As discussed, iconicity effects in sign language would be emphasized when naming pictures because lexical representations in this task tap into semantics more. Conversely, attenuated iconicity effects when translating words might result because lexical representations are directly accessed from the orthographic representation of the word.

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“…Similarly to word frequency, highly frequent syllable pairs are produced faster than less frequent syllable pairs [28,29]. We aimed to directly replicate a lab-based experiment [30], by using the same stimuli and procedure in the internet study as in the lab study. Our main aim was to determine if we could detect a word frequency effect.…”

Section: Introductionmentioning

confidence: 99%

Can we use the internet to study speech production? Yes we can! Evidence contrasting online versus laboratory naming latencies and errors

Fairs¹,

Strijkers²

2021

Preprint

Self Cite

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The closure of cognitive psychology labs around the world due to the COVID-19 pandemic has prevented in-person testing. This has caused a particular challenge for speech production researchers, as before the pandemic there were no studies demonstrating that reliable overt speech production data could be collected via the internet. Here, we present evidence that both accurate and reliable overt articulation data can be collected from internet-based speech production experiments. We tested 100 participants in a picture naming paradigm, where we manipulated the word and phonotactic frequency of the picture names. We compared our results to a lab-based study which used the same materials and design. We found a significant word frequency effect but no phonotactic frequency effect, fully replicating the lab-based results. Effect sizes were similar between experiments, but with significantly longer latencies in the internet-collected data. We found no evidence that internet upload or download speed affected either naming latencies or errors. In addition, we carried out a permutation-style analysis which recommends a minimum sample size of 40 participants for online production paradigms. In sum, our study demonstrates that internet-based testing of speech production is a feasible and promising endeavour, with less challenges than many researchers (anecdotally) assumed.

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The same ultra-rapid parallel brain dynamics underpin the production and perception of speech

Cited by 5 publications

References 125 publications

Iconicity in sign language production: Task matters

Iconicity in sign language production: Task matters

Iconicity in Sign Language Production: Task Matters

Can we use the internet to study speech production? Yes we can! Evidence contrasting online versus laboratory naming latencies and errors

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