LUIGIA GARRAPA
DOTTORE DI RICERCA
 
[ area di ricerca ]  [ curriculum sintetico ]
[ pubblicazioni ]  [ progetti ]
 
indirizzo ufficio: CRIL - PALAZZINA UFFICI - I PIANO - PIAZZA FILIPPO MURATORE, LECCE
email: luigia.garrapa@unisalento.it
telefono: +39 0832 335008
fax: +39 0832 335007
Home Page Personale http://ling.uni-konstanz.de/pages/home/garrapa/home_luigia.garrapa.htm
 
Principali aree di ricerca:
Fonologia, morfologia e fonetica delle lingue romanze; correlati comportamentali e neurofisiologici della percezione linguistica in soggetti pediatrici ipoacusici con impianto cocleare vs udenti.
 
Curriculum sintetico:
Da Aprile ad Agosto 2003 � visiting Erasmus student presso il Department of Computational Linguistics and Experimental Phonetics dell�Universitaet des Saarlandes in Saarbr�cken (Germania).
In Luglio 2004 consegue la Laurea (vecchio ordinamento) in Lingue e Letterature Straniere (Inglese, Tedesco e Francese), con 110 e Lode presso l�Universit� del Salento, con una tesi in Linguistica Generale e Fonetica Sperimentale dal titolo: "Il vocalismo tonico di Cutrofiano e Collepasso (in provincia di Lecce): analisi acustica dei dati" (relatori sono il Prof. Mirko Grimaldi e la Prof.ssa Barbara Gili-Fivela). Un estratto della tesi di laurea � stato pubblicato come �Vocali maschili e femminili fra Salento centrale e Salento meridionale: problemi sincronici per un�analisi diacronica� negli �Atti del 1 Convegno Nazionale dell�AISV� nel 2004.
Da Aprile 2006 a Dicembre 2008 � ricercatrice e docente (Wissenaschaftliche Mitarbeiterin, BAT/IIa) per il progetto A25 �Morphophonological variation at word edges: Evidence from Romance� (Principal investigator: Prof. Judith Meinsch�fer) all�interno del progetto SFB 471 �Variation and evolution in the mental lexicon� (Principal investigator: Prof. Aditi Lahiri) finanziato dalla Deutsche Forschungsgemeinschaft presso il Fachbereich Sprachwissenschaft dell�Universitaet Konstanz (Germania). Nel periodo Gennaio-Marzo 2009 ottiene una borsa di ricerca individuale per il completamento della tesi dottorale ed attivit� di ricerca all�interno della Exzellenzinitiative, 3 F�rderlinie, Gender Issues finanziata dal Gleichstellungsrat dell�Universitaet Konstanz (Germania).
In Ottobre 2009 consegue il Dottorato di ricerca in Linguistica (in cotutela fra l'Universit� del Salento e l'Universit� di Konstanz) con la votazione "Magna cum laude" (i direttori di tesi sono il Prof. Mirko Grimaldi dell�Universit� del Salento, la Prof.ssa Judith Meinschaefer dell�Universitaet Konstanz/Wuerzburg e la Prof.ssa Janet Grijzenhout dell�Universitaet Konstanz). In Ottobre 2011 pubblica la tesi di dottorato presso l�editore Peter Lang di Berna come monografia di ricerca dal titolo �Vowel elision in Florentine Italian� nella collana �Europ�ische Hochschulschriften � Italienische Sprache und Literatur / European University Studies - Italian Language and Literature 50� (ISBN:978-3-0343-1074-1).
Da Gennaio 2010 inizia il secondo dottorato di ricerca in linguistica (tuttora in corso) presso l�Universit� di Padova e lavora a uno studio dal titolo �The behavioural and neurophysiologic correlates of vowel processing by Italian cochlear-implant and normal-hearing children� (i direttori di tesi sono il Prof. Mirko Grimaldi dell�Universit� del Salento, la Prof.ssa Laura Vanelli dell�Universit� di Padova e il Prof. Andrea Calabrese dell�University of Connecticut). Lo studio, che si svolge materialmente a Lecce, si svolge in collaborazione fra l�Universit� di Padova, il CRIL e l�UOC di Otorinolaringoiatria dell�ospedale �Fazzi� di Lecce.
Curriculum completo
 
Pubblicazioni:
 
Progetti:


The behavioral and neurophysiologic correlates of vowel processing in Italian cochlear-implant and normal-hearing children.
Unilateral cochlear implants (henceforth, CI) partially restore auditory sensation in children affected by congenital, bilateral, and severe to profound neurosensorial hearing loss, especially if the CI surgery takes place during the sensitive period for central auditory pathway maturation (until 44months) [Bishof 2007]. For the first time, this study investigates detection, identification, and discrimination of /i, u, e, o, a/ in a group of congenitally-deaf, early-implanted, Italian children (mean age at CI surgery: 33 months, mean age at testing: 109 months), wearing their CI on their right ear, and in a group of age-matched controls (henceforth NH children) living in the province of Lecce (Apulia, Southern Italy). Vowel detection, identification, and discrimination will be investigated by combining behavioral measures (active vowel identification and discrimination tasks) and neurophysiologic measures (passive EEG recording and extraction of the P1, N1, MMN, and P3a responses evoked by vowel presentation) [Korkzac et al. 2005; Purdy et al. 2005; Martin et al. 2008]. The aim of this study is twofold. First, we want to ascertain whether or not Italian CI children detect, identify, and discriminate vowels building on a time window and an accuracy comparable to those exhibited by NH children, both at the behavioral and at the neurophysiologic levels. Second, we aim at determining whether, and to what extent, age at surgery (mean: 33months, range: 23-54months) and length of CI use (mean: 76months, range: 28-97months) affect vowel processing in early-implanted Italian children. Building on the results achieved by previous ERP studies on CI children exposed to English, French, Dutch, and Finnish [Sharma et al. 2005, 2007, 2009; Beynon et al. 2002; Singh et al. 2004; Henkin et al. 2008], we expect Italian CI children to need a prolonged time window and/or to rely on a lower accuracy in vowel processing with respect to NH children, both at the behavioral and at the neurophysiologic levels. We also expect those Italian deaf children who received their CI earlier and/or who benefit from a longer CI use to process vowels more quickly and more accurately compared to the other CI children. The international research group consists of Dr. Luigia Garrapa (University of Padova and University of Salento, Italy), Prof. Mirko Grimaldi (University of Salento, Italy), Dr. Davide Bottari (University of Hamburg, Germany), Prof. Francesco Pavani (University of Trento, Italy), Prof. Andrea Calabrese (University of Connecticut, USA), Dr. Michele De Benedetto (UOC of ORL, Hospital �Fazzi� in Lecce), and Dr. Silvano Vitale (UOC of ORL, Hospital �Fazzi� in Lecce).


Cortical vowel processing in typically-developing Italian children: an ERP study.
In typically-developing individuals, the auditory cortex is responsible for speech sound processing. Identification and discrimination of native speech sounds takes place when native vowels and consonants are recognized and their long-term memory representations, stored in the auditory cortex, are activated [Pulverm�ller & Shyrov 2006; N��t�nen et al. 2011]. Speech sound processing (i.e. detection, identification, and discrimination) at the level of the auditory cortex can be easily investigated by means of the auditory Event-Related Potentials (ERPs), both in normal and pathologic, adult and pediatric subjects [Kujala et al. 2007; Martin et al. 2008; N��t�nen et al. 2011; Duncan et al. 2010]. Passively recorded ERPs are brain responses automatically elicited by auditory sounds (typically speech) and they provide information regarding the timing (through ERP latency, measured in milliseconds), accuracy (through ERP amplitude, measured in microvolts), hemisphere involvement (through scalp topography of ERP latency and amplitude), and neuronal activation (through ERP duration) in speech sound processing. For the first time, this study investigates the neurophysiological correlates of cortical processing (i.e. detection, identification, and discrimination) of 5 Italian vowels (/i, u, e, o, a/) in Southern Italian school-age children (mean age at testing: 92 months, range: 51-131 months), all right-handed. Three ERP components are of intetest in this study: the P1, N1, and MMN responses. The P1 and N1 responses indicate that vowels have been detected and identified, in turn [Sharma et al. 2005; Hyde 1997; N��t�nen et al. 2011]. The MMN response indexes that vowels have been recognized as native phonemes and phonetically discriminated with respect to their acoustic and articulatory characteristics [N��t�nen et al. 2011]. Crucially, the parameters of the N1 and MMN responses appear to be modulated by the vowel-specific acoustic features [Obleser et al. 2003; Scharinger et al. 2012]. The aim of this study is threefold. First, we will provide the exact parameters (i.e. the peak latency and amplitude as well as the component duration) of the P1, N1, and MMN responses evoked by Italian vowels in typically-developing, school-age children. The P1, N1, and MMN parameters detailed in this study may be used as a reference for future work on speech sound processing in typically-developing or patologic Italian children. Second, we will investigate scalp distribution of the P1, N1, and MMN responses over the left and the right hemispheres in order to ascertain whether or not the left hemisphere in more involved in speech sound processing in right-handed children. Third, we will determine whether, and to what extent, the N1 and MMN parameters are vowel-specific in terms of latency, amplitude, and duration as well as whether some vowels which are processed more rapidly or evoke ERP components endowed with a higher amplitude and/or a longer duration compared to other vowels. The international research group is formed by Dr. Luigia Garrapa (University of Padova and University of Salento, Italy), Prof. Mirko Grimaldi (University of Salento, Italy), Dr. Davide Bottari (University of Hamburg, Germany), Prof. Francesco Pavani (University of Trento, Italy), Prof. Andrea Calabrese (University of Connecticut, USA), Dr. Michele De Benedetto (UOC of ORL, Hospital �Fazzi� in Lecce), and Dr. Silvano Vitale (UOC of ORL, Hospital �Fazzi� in Lecce).

 
 
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