scholarly journals How does foreign accent affect template matching mechanisms? ERP evidence from Polish

2019 ◽  
Vol 5 (1) ◽  
pp. 61-74
Author(s):  
Hanna Kędzierska
Keyword(s):  
Template Matching ◽  
Brain Activity ◽  
Foreign Accent ◽  
Sentential Context ◽  
Accented Speech ◽  
Foreign Accents ◽  
Native Speech ◽  
The Brain

Sentential context is believed to have particularly robust effects on the processing of foreign-accented speech (Lev-Ari 2015). However, recent neurolinguistic studies investigating the relation between non-native speech and semantic predictability suggest that anticipation mechanisms are, in fact, hampered during the processing of foreign accents (Romero-Rivas et al. 2016). The current study is an attempt to shed more light on this issue and establish whether the mechanisms responsible for categorical template matching remain active during the processing of non-native speech. The study investigated neural reactions towards high cloze probability template endings (i.e., the endings of fixed phrases selected in a pre-test) and their unexpected counterparts. 120 Polish sentences were recorded by a native Polish speaker and a non-native (L1 Ukrainian) speaker of Polish in order to investigate the reactions towards an easily recognizable foreign accent. The brain activity of 28 monolinguals (L1 Polish) was recorded during the EEG sessions. In native-accented speech, violations of high cloze probability items resulted in a broadly distributed negativity followed by a P600 effect. No comparable effects were observed in the case of foreign-accented speech. These results are compatible with previous findings (Hanulíková et al. 2012; Romero-Rivas et al. 2016) as they confirm that linguistic anticipatory and reanalysis processes are hampered in the case of non-native speech.

scholarly journals When One Person's Mistake Is Another's Standard Usage: The Effect of Foreign Accent on Syntactic Processing

2012 ◽  
Vol 24 (4) ◽  
pp. 878-887 ◽  
Author(s):  
Adriana Hanulíková ◽  
Petra M. van Alphen ◽  
Merel M. van Goch ◽  
Andrea Weber
Keyword(s):  
Speech Processing ◽  
Native Speaker ◽  
Neural Correlates ◽  
Syntactic Processing ◽  
Foreign Accent ◽  
Gender Agreement ◽  
Accented Speech ◽  
Grammatical Errors ◽  
Integration Problem ◽  
Native Speech

How do native listeners process grammatical errors that are frequent in non-native speech? We investigated whether the neural correlates of syntactic processing are modulated by speaker identity. ERPs to gender agreement errors in sentences spoken by a native speaker were compared with the same errors spoken by a non-native speaker. In line with previous research, gender violations in native speech resulted in a P600 effect (larger P600 for violations in comparison with correct sentences), but when the same violations were produced by the non-native speaker with a foreign accent, no P600 effect was observed. Control sentences with semantic violations elicited comparable N400 effects for both the native and the non-native speaker, confirming no general integration problem in foreign-accented speech. The results demonstrate that the P600 is modulated by speaker identity, extending our knowledge about the role of speaker's characteristics on neural correlates of speech processing.

The Effects of Speaker Accent and Target Predictability on Perception of Mispronunciations

1999 ◽  
Vol 42 (1) ◽  
pp. 56-64 ◽  
Author(s):  
Peggy M. Schmid ◽  
Grace H. Yeni-Komshian
Keyword(s):  
Distinctive Feature ◽  
Native Speakers ◽  
Foreign Accent ◽  
Initial Phoneme ◽  
Accented Speech ◽  
Native Speech ◽  
Processing Effort ◽  
Target Words

This study makes use of a listening for mispronunciation task to examine how native English listeners perceive sentences produced by non-native speakers. The effects of target predictability and degree of foreign accent were investigated. Native and non-native speakers produced English sentences containing mispronunciation. Mispronunciations (MPs) were constructed by changing the initial phoneme of target words by a single distinctive feature along the dimensions of voicing, place, or manner. Results showed that listeners (a) were more accurate and faster in detecting MPs produced by native than non-native speakers, (b) were more accurate and faster in detecting MPs in predictable than unpredictable sentences, and (3) were more accurate in detecting MPs produced by non-native speakers with milder accents, as compared to heavier accents. These findings suggest that listening to fairly intelligible but accented speech requires increased processing effort—possibly because of subtle differences in intelligibility and increased variability characteristic of non-native speech.

Rules Rule! Brain Activity Dissociates the Representations of Stimulus Contingencies with Varying Levels of Complexity

2012 ◽  
Vol 24 (9) ◽  
pp. 1941-1959 ◽  
Author(s):  
Chun-Yu Tse ◽  
Kathy A. Low ◽  
Monica Fabiani ◽  
Gabriele Gratton
Keyword(s):  
Template Matching ◽  
Near Infrared ◽  
Brain Activity ◽  
Contextual Information ◽  
Processing System ◽  
Optical Signal ◽  
Infrared Light ◽  
Local Probability ◽  
The Brain ◽  
Single Repetition

The significance of stimuli is linked not only to their nature but also to the sequential structure in which they are embedded, which gives rise to contingency rules. Humans have an extraordinary ability to extract and exploit these rules, as exemplified by the role of grammar and syntax in language. To study the brain representations of contingency rules, we recorded ERPs and event-related optical signal (EROS; which uses near-infrared light to measure the optical changes associated with neuronal responses). We used sequences of high- and low-frequency tones varying according to three contingency rules, which were orthogonally manipulated and differed in processing requirements: A Single Repetition rule required only template matching, a Local Probability rule required relating a stimulus to its context, and a Global Probability rule could be derived through template matching or with reference to the global sequence context. ERP activity at 200–300 msec was related to the Single Repetition and Global Probability rules (reflecting access to representations based on template matching), whereas longer-latency activity (300-450 msec) was related to the Local Probability and Global Probability rules (reflecting access to representations incorporating contextual information). EROS responses with corresponding latencies indicated that the earlier activity involved the superior temporal gyrus, whereas later responses involved a fronto-parietal network. This suggests that the brain can simultaneously hold different models of stimulus contingencies at different levels of the information processing system according to their processing requirements, as indicated by the latency and location of the corresponding brain activity.

scholarly journals The perception of native vs. non-native Danish speech: Bent and Bradlow’s matched interlanguage speech intelligibility benefit revisited

2020 ◽  
Vol 18 (2) ◽  
pp. 284-296
Author(s):  
Paweł Korpal ◽  
◽  
Mikołaj Sobkowiak ◽  
Keyword(s):  
Speech Intelligibility ◽  
Native Speakers ◽  
Native Speaker ◽  
Foreign Accent ◽  
Valuable Insight ◽  
Accented Speech ◽  
Polish Language ◽  
Native Speech ◽  
Insight Into ◽  
Language Pair

The main objective of the study was to test the applicability of Bent and Bradlow’s matched interlanguage speech intelligibility benefit to the Danish-Polish language pair. We aimed to verify whether it was easier for Polish students of Danish to understand a Danish native speaker or a Polish speaker with a proficient command of Danish. Sixteen Polish students, divided into two groups of eight, listened to two recordings of two Danish texts: one recorded by a native speaker of Danish and the other one — by a native speaker of Polish who is a graduate of Danish philology from a Polish university. Before the experiment, all of the recordings were evaluated in terms of traces of foreign accent using a 7-point Likert scale, the experts being native speakers of Danish. The evaluators assessed the Polish native speaker’s pronunciation as proficient, but they identified certain segmental and suprasegmental features in his speech that are common indicators of a foreign accent in Danish. During the experiment, participants were asked to fill in each recording transcript with twenty missing words. The analysis of the results revealed that the participants scored higher when listening to the text recorded by the Polish speaker. Hence, the matched interlanguage speech intelligibility benefit was observed in a study using Polish as L1 (native language) and Danish as a foreign language. The study may provide a valuable insight into the question of non-native speech perception, foreign-accented speech and the veracity of the matched interlanguage speech intelligibility benefit for the Polish–Danish language pair.

Defining the cognitive mechanisms underlying reactions to foreign accented speech

2012 ◽  
Vol 10 (2) ◽  
pp. 427-453 ◽  
Author(s):  
Andrew J. Pantos
Keyword(s):  
Cognitive Processing ◽  
Language Attitudes ◽  
Cognitive Model ◽  
Foreign Accent ◽  
Cognitive Mechanisms ◽  
Negative Attitudes ◽  
Explicit Attitudes ◽  
Accented Speech ◽  
Foreign Accents ◽  
Likelihood Model

With the notable exception of the application of the metonymy model to explain stereotyping (Kristiansen, 2001), sociolinguistic language attitudes research has typically focused exclusively on explicit attitudes toward foreign accents without providing a cognitive model to explain how such attitudes are formed. At the same time, researchers in other fields have proposed the use of specific cognitive processing models such as the Elaboration Likelihood Model (Petty & Cacioppo, 1986) to explain the cognitive processes underlying reactions to foreign-accented speakers, without isolating foreign accent as an independent variable and without considering that listeners may possess different explicit and implicit attitudes towards the same speaker (e.g., Frumkin, 2007). Focusing on instances where participants exhibit different explicit attitudes toward the same foreign-accented speaker for different speaker traits (e.g., likeability versus knowledge), the present study seeks to provide a deeper understanding of the nature of reactions to foreign accented speech by testing at which point negative attitudes toward foreign accents are formed and changed. Specifically, this research asks whether interlocutors have uniformly negative immediate associative reactions to foreign accent that are subsequently mitigated for certain judgments by propositional processes to form differing explicit attitudes, or whether the immediate reactions are ambivalent, but subsequently become negative for certain judgments through propositional processes.

Complexity Measures of Brain Electrophysiological Activity

2010 ◽  
Vol 24 (2) ◽  
pp. 131-135 ◽  
Author(s):  
Włodzimierz Klonowski ◽  
Pawel Stepien ◽  
Robert Stepien
Keyword(s):  
Brain Activity ◽  
Deterministic Chaos ◽  
Epileptic Seizures ◽  
Eeg Signal ◽  
Eeg Signals ◽  
Complexity Measures ◽  
Electrophysiological Activity ◽  
Signal Complexity ◽  
Physiological Sleep ◽  
The Brain

Over 20 years ago, Watt and Hameroff (1987 ) suggested that consciousness may be described as a manifestation of deterministic chaos in the brain/mind. To analyze EEG-signal complexity, we used Higuchi’s fractal dimension in time domain and symbolic analysis methods. Our results of analysis of EEG-signals under anesthesia, during physiological sleep, and during epileptic seizures lead to a conclusion similar to that of Watt and Hameroff: Brain activity, measured by complexity of the EEG-signal, diminishes (becomes less chaotic) when consciousness is being “switched off”. So, consciousness may be described as a manifestation of deterministic chaos in the brain/mind.

Relation Between Level of Prefrontal Activity and Subject's Performance

1999 ◽  
Vol 13 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Laurence Casini ◽  
Françoise Macar ◽  
Marie-Hélène Giard
Keyword(s):  
Brain Activity ◽  
Sensory Information ◽  
Practice Phase ◽  
Trained Subjects ◽  
Anagram Task ◽  
Economic Information ◽  
Long Duration ◽  
Level Of Activity ◽  
The Brain ◽  
Processing Mechanism

Abstract The experiment reported here was aimed at determining whether the level of brain activity can be related to performance in trained subjects. Two tasks were compared: a temporal and a linguistic task. An array of four letters appeared on a screen. In the temporal task, subjects had to decide whether the letters remained on the screen for a short or a long duration as learned in a practice phase. In the linguistic task, they had to determine whether the four letters could form a word or not (anagram task). These tasks allowed us to compare the level of brain activity obtained in correct and incorrect responses. The current density measures recorded over prefrontal areas showed a relationship between the performance and the level of activity in the temporal task only. The level of activity obtained with correct responses was lower than that obtained with incorrect responses. This suggests that a good temporal performance could be the result of an efficacious, but economic, information-processing mechanism in the brain. In addition, the absence of this relation in the anagram task results in the question of whether this relation is specific to the processing of sensory information only.

Automated System for Epileptic Seizures Prediction based on Multi-Channel Recordings of Electrical Brain Activity

2018 ◽  
pp. 115-122 ◽  
Author(s):  
V. A. Maksimenko ◽  
A. A. Harchenko ◽  
A. Lüttjohann
Keyword(s):  
Epileptic Seizure ◽  
Brain Activity ◽  
Epileptic Seizures ◽  
Automated System ◽  
Brain Computer Interfaces ◽  
Electrical Brain Activity ◽  
Computer Interfaces ◽  
Prediction And Prevention ◽  
The Brain

Introduction: Now the great interest in studying the brain activity based on detection of oscillatory patterns on the recorded data of electrical neuronal activity (electroencephalograms) is associated with the possibility of developing brain-computer interfaces. Braincomputer interfaces are based on the real-time detection of characteristic patterns on electroencephalograms and their transformation  into commands for controlling external devices. One of the important areas of the brain-computer interfaces application is the control of the pathological activity of the brain. This is in demand for epilepsy patients, who do not respond to drug treatment.Purpose: A technique for detecting the characteristic patterns of neural activity preceding the occurrence of epileptic seizures.Results:Using multi-channel electroencephalograms, we consider the dynamics of thalamo-cortical brain network, preceded the occurrence of an epileptic seizure. We have developed technique which allows to predict the occurrence of an epileptic seizure. The technique has been implemented in a brain-computer interface, which has been tested in-vivo on the animal model of absence epilepsy.Practical relevance:The results of our study demonstrate the possibility of epileptic seizures prediction based on multichannel electroencephalograms. The obtained results can be used in the development of neurointerfaces for the prediction and prevention of seizures of various types of epilepsy in humans. 

scholarly journals Spinal vertebrae localization and analysis on disproportionality in curvature using radiography—a comprehensive review

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Joddat Fatima ◽  
Muhammad Usman Akram ◽  
Amina Jameel ◽  
Adeel Muzaffar Syed
Keyword(s):  
Spinal Cord ◽  
Template Matching ◽  
Human Anatomy ◽  
Comprehensive Overview ◽  
Low Contrast ◽  
Active Shape Models ◽  
Harris Corner ◽  
Illumination Changes ◽  
The Central Nervous System ◽  
The Brain

AbstractIn human anatomy, the central nervous system (CNS) acts as a significant processing hub. CNS is clinically divided into two major parts: the brain and the spinal cord. The spinal cord assists the overall communication network of the human anatomy through the brain. The mobility of body and the structure of the whole skeleton is also balanced with the help of the spinal bone, along with reflex control. According to the Global Burden of Disease 2010, worldwide, back pain issues are the leading cause of disability. The clinical specialists in the field estimate almost 80% of the population with experience of back issues. The segmentation of the vertebrae is considered a difficult procedure through imaging. The problem has been catered by different researchers using diverse hand-crafted features like Harris corner, template matching, active shape models, and Hough transform. Existing methods do not handle the illumination changes and shape-based variations. The low-contrast and unclear view of the vertebrae also makes it difficult to get good results. In recent times, convolutional nnural Network (CNN) has taken the research to the next level, producing high-accuracy results. Different architectures of CNN such as UNet, FCN, and ResNet have been used for segmentation and deformity analysis. The aim of this review article is to give a comprehensive overview of how different authors in different times have addressed these issues and proposed different mythologies for the localization and analysis of curvature deformity of the vertebrae in the spinal cord.

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