scholarly journals Functional MRI of native and non-native speech production in sequential German-English bilinguals

2021 ◽  
Author(s):  
Miriam Treutler ◽  
Peter Sörös
Keyword(s):  
Language Production ◽  
Native Speakers ◽  
Inferior Frontal Gyrus ◽  
Neural Correlates ◽  
Left Inferior Frontal Gyrus ◽  
Non Invasive ◽  
English Vowels ◽  
Native Speech ◽  
Bilingualism And Multilingualism ◽  
Increased Activity

AbstractBilingualism and multilingualism are highly prevalent. Non-invasive brain imaging has been used to study the neural correlates of native (L1) and non-native (L2) speech and language production, mainly on the lexical and syntactic level. Here, we acquired continuous fast event-related FMRI during visually cued overt production of exclusively German and English vowels and syllables. We analyzed data from 13 university students, native speakers of German and sequential English bilinguals. The production of non-native English sounds was associated with increased activity of the left primary sensori-motor cortex, bilateral cerebellar hemispheres (lobule VI), left inferior frontal gyrus, and left anterior insula compared to native German sounds. The contrast German > English sounds was not statistically significant. Our results emphasize that the production of non-native speech requires additional neural resources already on a basic phonological level in sequential bilinguals.

scholarly journals Functional MRI of Native and Non-native Speech Sound Production in Sequential German-English Bilinguals

2021 ◽  
Vol 15 ◽  
Author(s):  
Miriam Treutler ◽  
Peter Sörös
Keyword(s):  
Language Production ◽  
Sound Production ◽  
Native Speakers ◽  
Inferior Frontal Gyrus ◽  
Speech Sound ◽  
Non Invasive ◽  
English Vowels ◽  
Primary Sensorimotor Cortex ◽  
Native Speech ◽  
Bilingualism And Multilingualism

Bilingualism and multilingualism are highly prevalent. Non-invasive brain imaging has been used to study the neural correlates of native and non-native speech and language production, mainly on the lexical and syntactic level. Here, we acquired continuous fast event-related FMRI during visually cued overt production of exclusively German and English vowels and syllables. We analyzed data from 13 university students, native speakers of German and sequential English bilinguals. The production of non-native English sounds was associated with increased activity of the left primary sensorimotor cortex, bilateral cerebellar hemispheres (lobule VI), left inferior frontal gyrus, and left anterior insula compared to native German sounds. The contrast German > English sounds was not statistically significant. Our results emphasize that the production of non-native speech requires additional neural resources already on a basic phonological level in sequential bilinguals.

scholarly journals The acoustic characteristics of non-native American English vowels

Linguistica ◽  
2017 ◽  
Vol 57 (1) ◽  
pp. 59-72
Author(s):  
Biljana Čubrović
Keyword(s):  
United States ◽  
Native American ◽  
Native Speakers ◽  
American English ◽  
The United States ◽  
Vowel Quality ◽  
Acoustic Characteristics ◽  
Language Background ◽  
English Vowels ◽  
Native Speech

This study aims at discussing the phonetic property of vowel quality in English, as exercised by both native speakers of General American English (AE) and non-native speakers of General American English of Serbian language background, all residents of the United States. Ten Serbian male speakers and four native male speakers of AE are recorded in separate experiments and their speech analyzed acoustically for any significant phonetic differences, looking into a set of monosyllabic English words representing nine vowels of AE. The general aim of the experiments is to evaluate the phonetic characteristics of AE vowels, with particular attention to F1 and F2 values, investigate which vowels differ most in the two groups of participants, and provide some explanations for these variations. A single most important observation that is the result of this vowel study is an evident merger of three pairs of vowels in the non-native speech: /i ɪ/, /u ʊ/, and /ɛ æ/.

Investigating the Neural Correlates of the Affect Heuristic Using Functional Magnetic Resonance Imaging

2021 ◽  
pp. 1-14
Author(s):  
Kenny Skagerlund ◽  
Mikael Skagenholt ◽  
Paul J. Hamilton ◽  
Paul Slovic ◽  
Daniel Västfjäll
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Inferior Frontal Gyrus ◽  
Neural Correlates ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Left Inferior Frontal Gyrus ◽  
Affect Heuristic ◽  
Medial Frontal Gyrus

Abstract This study investigated the neural correlates of the so-called “affect heuristic,” which refers to the phenomenon whereby individuals tend to rely on affective states rather than rational deliberation of utility and probabilities during judgments of risk and utility of a given event or scenario. The study sought to explore whether there are shared regional activations during both judgments of relative risk and relative benefit of various scenarios, thus being a potential candidate of the affect heuristic. Using functional magnetic resonance imaging, we developed a novel risk perception task, based on a preexisting behavioral task assessing the affect heuristic. A whole-brain voxel-wise analysis of a sample of participants (n = 42) during the risk and benefit conditions revealed overlapping clusters in the left insula, left inferior frontal gyrus, and left medial frontal gyrus across conditions. Extraction of parameter estimates of these clusters revealed that activity of these regions during both tasks was inversely correlated with a behavioral measure assessing the inclination to use the affect heuristic. More activity in these areas during risk judgments reflect individuals' ability to disregard momentary affective impulses. The insula may be involved in integrating viscero-somatosensory information and forming a representation of the current emotional state of the body, whereas activity in the left inferior frontal gyrus and medial frontal gyrus indicates that executive processes may be involved in inhibiting the impulse of making judgments in favor of deliberate risk evaluations.

Tolerating Ambiguity

2011 ◽  
Vol 58 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Ian S. Hargreaves ◽  
Penny M. Pexman ◽  
Daniel J. Pittman ◽  
Bradley G. Goodyear
Keyword(s):  
Inferior Frontal Gyrus ◽  
Behavioral Effect ◽  
Neural Correlates ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Left Inferior Frontal Gyrus ◽  
Ambiguous Words ◽  
Multiple Meanings ◽  
Ambiguity Effect ◽  
Activation Phase

Many models of word recognition predict a lexical ambiguity disadvantage in semantic categorization tasks (SCTs). However, recent evidence suggests that an ambiguity disadvantage in SCT results from a bias in the decision-making phase of the task and not in the meaning-activation phase: Behavioral effects of ambiguity disappear when these decision biases are controlled ( Pexman, Hino, & Lupker, 2004 ). The current study used event-related functional magnetic resonance imaging to examine the neural correlates of ambiguity in a task that produced no behavioral ambiguity effect (i.e., SCT with a well-defined decision category). Twenty healthy adults participated. Results showed that despite producing no behavioral effect of ambiguity, ambiguous words were associated with the recruitment of cortical structures implicated in top-down modulation of noisy activity (e.g., left inferior frontal gyrus) when compared to unambiguous words. These results are interpreted as evidence that multiple meanings are activated for ambiguous words in SCT.

Intelligibility of American English vowels of native and non-native speakers in quiet and speech-shaped noise

2012 ◽  
Vol 16 (1) ◽  
pp. 206-218 ◽  
Author(s):  
CHANG LIU ◽  
SU-HYUN JIN
Keyword(s):  
Processing Time ◽  
Native Speakers ◽  
American English ◽  
Noise Background ◽  
English Vowels ◽  
Native Speech

This study examined intelligibility of twelve American English vowels produced by English, Chinese, and Korean native speakers in quiet and speech-shaped noise in which vowels were presented at six sensation levels from 0 dB to 10 dB. The slopes of vowel intelligibility functions and the processing time for listeners to identify vowels were dependent on speakers’ language backgrounds and non-native speakers’ vowel intelligibility in quiet. These results indicated that noise background affected non-native speakers’ vowel intelligibility more greatly than native speakers, possibly due to the acoustic deviations in non-native speech and lack of listeners’ experience to non-native produced speech.

scholarly journals The Neural Circuitry Involved in the Reading of German Words and Pseudowords: A PET Study

1999 ◽  
Vol 11 (4) ◽  
pp. 383-398 ◽  
Author(s):  
Peter Hagoort ◽  
Peter Indefrey ◽  
Colin Brown ◽  
Hans Herzog ◽  
Helmuth Steinmetz ◽  
...  
Keyword(s):  
Inferior Frontal Gyrus ◽  
Premotor Cortex ◽  
Reading Aloud ◽  
Low Frequency ◽  
Silent Reading ◽  
Neural Correlates ◽  
Activation Patterns ◽  
Left Inferior Frontal Gyrus ◽  
Input Strings ◽  
Age Range

Silent reading and reading aloud of German words and pseudowords were used in a PET study using (15O) butanol to examine the neural correlates of reading and of the phonological conversion of legal letter strings, with or without meaning. The results of 11 healthy, right-handed volunteers in the age range of 25 to 30 years showed activation of the lingual gyri during silent reading in comparison with viewing a fixation cross. Comparisons between the reading of words and pseudo-words suggest the involvement of the middle temporal gyri in retrieving both the phonological and semantic code for words. The reading of pseudowords activates the left inferior frontal gyrus, including the ventral part of Broca's area, to a larger extent than the reading of words. This suggests that this area might be involved in the sublexical conversion of orthographic input strings into phonological output codes. (Pre)motor areas were found to be activated during both silent reading and reading aloud. On the basis of the obtained activation patterns, it is hypothesized that the articulation of high-frequency syllables requires the retrieval of their concomitant articulatory gestures from the SMA and that the articulation of low-frequency syllables recruits the left medial premotor cortex.

scholarly journals Anterior and Posterior Left Inferior Frontal Gyrus Contribute to the Implementation of Grammatical Determiners During Language Production

2020 ◽  
Vol 11 ◽  
Author(s):  
Byurakn Ishkhanyan ◽  
Violaine Michel Lange ◽  
Kasper Boye ◽  
Jesper Mogensen ◽  
Anke Karabanov ◽  
...  
Keyword(s):  
Language Production ◽  
Inferior Frontal Gyrus ◽  
Left Inferior Frontal Gyrus
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