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Voce PERCEPTION , PRODUCTION , ARTICULATION AND IMAGERY ARTICULATION OF ITALIAN VOWELS : AN ERP STUDY
| Content Provider | Semantic Scholar |
|---|---|
| Author | Manca, Anna Dora Grimaldi, Mirko |
| Copyright Year | 2016 |
| Abstract | 1. ABSTRACT In the present study cortical responses to two sustained Italian vowels, /a/ and /i/ were analyzed in perception and production tasks by using the event-related potential (ERP) technique. We first aimed at re-testing whether EEG signal could mirror spectro-acoustical features of the two Italian vowels by measuring N1/P2 ERP components. Secondly, and more intriguingly, we also investigated whether the functional modulation of these earlier neural patterns could be detected in speech production tasks such as Acoustic Production, Silent production and Imagery articulation of linguistic sounds. It is important to highlight that research in language production processes by EEG measurements has been poorly investigated as yet. Actually, the main probes are carried out using indirect speech production tasks prevalently focused on lexical access aspect of word production and, moreover, these studies have achieved only by using invasive methods such as the electrocorticography: recent works with intracranial cortical recordings demonstrated distinct cortical activity patterns to different sounds segments, i.e. consonants and vowels. Accordingly, the present study intended to analyze the noteworthy characteristics of the cortical activity engaged in vowel production tasks, with the main goal to prove whether specific neuronal modulations could be reliable for a primary vowel distinction based on acoustic and articulatory configurations properties. First, we showed that the earlier auditory waveform complex N1/P2, was elicited in each experimental task irrespective of the vowel type. More interestingly, the cortical activity of the auditory cortex seems to reflect different spectro-acoustical items of the evaluated Italian vowels not only in perception task but in all speech production performance. Specifically, the vowel /a/ generated a weaker activity than /i/ as revealed by different neuronal modulations. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.cril.unile.it/documenti/curriculum/118_AISV2013_Manca%20AD,%20Grimaldi%20M.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
