scholarly journals Complex Time-Dependent ERP Hemispheric Asymmetries during Word Matching in Phonological, Semantic and Orthographical Matching Judgment Tasks

Symmetry ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 74
Author(s):  
Chiara Spironelli ◽  
Alessandro Angrilli
Keyword(s):  
Word Reading ◽  
Event Related Potentials ◽  
Past Research ◽  
Time Dependent ◽  
Negative Wave ◽  
Hemispheric Asymmetries ◽  
Complex Processes ◽  
Pair Comparisons ◽  
Related Potentials ◽  
Single Word Reading

Language-induced asymmetry to single word reading has been well investigated in past research. Less known are the complex processes and related asymmetries occurring when a word is compared with the previous one, according to specific tasks. To this end, we used a paradigm based on 80 sequential word pair comparisons and three blocked tasks: phonological, semantic and orthographical matching judgment. Participants had to decide whether the target word (W2) did or did not match the prime word (W1), presented 2 sec before, according to the task. The event-related potentials (ERPs) evoked by W2 in 20 participants have been analyzed. The first negative wave, the Recognition Potential (RP), peaking at about 120 ms over parietal sites, showed greater amplitude at left sites in all tasks, thus revealing the typical left-lateralization. At frontal sites, only the phonological task showed left lateralization. The following N400 (300–450 ms) showed an interesting interaction: Match trials elicited greater left asymmetry on frontal regions to phonological than to semantic than to visual-perceptual tasks, whereas mismatch trials induced an inverted asymmetry, marked by greater amplitude over right frontal sites, regardless of the task. Concerning the late N400 (450–600 ms), phonological and semantic tasks showed an overlapping pattern, with left lateralization in match and right lateralization in mismatch conditions. Results point to complex task- and time-dependent hemispheric asymmetries in word matching.

Event-related potentials during Chinese single-character and two-character word reading in children

2019 ◽  
Vol 136 ◽  
pp. 103589 ◽  
Author(s):  
Jason Chor Ming Lo ◽  
Catherine McBride ◽  
Connie Suk-han Ho ◽  
Urs Maurer
Keyword(s):  
Word Reading ◽  
Event Related Potentials ◽  
Single Character ◽  
Related Potentials

scholarly journals Psychological and Electrophysiological Correlates of Word Learning Success

2021 ◽  
Vol 14 (2) ◽  
pp. 171-192
Author(s):  
Nadezhda A. Mkrtychian ◽  
Svetlana N. Kostromina ◽  
Daria S. Gnedykh ◽  
Diana M. Tsvetova ◽  
Evgeny D. Blagovechtchenski ◽  
...  
Keyword(s):  
Language Learning ◽  
Word Learning ◽  
Word Reading ◽  
Recognition Task ◽  
Event Related Potentials ◽  
Temporal Correlation ◽  
Learning Success ◽  
Alpha Oscillation ◽  
Related Potentials ◽  
Novel Words

Background. A rich vocabulary supports human achievements in socio-economic activities, education, and communication. It is therefore important to clarify the nature of language acquisition as a complex multidimensional process. However, both the psychological and neurophysiological mechanisms underpinning language learning, as well as the links between them, are still poorly understood. Objective. This study aims to explore the psychological and neurophysiological correlates of successful word acquisition in a person’s native language. Design. Thirty adults read sentences with novel nouns, following which the participants’ electroencephalograms were recorded during a word-reading task. Event-related potentials in response to novel words and alpha oscillation parameters (amplitude, variability, and long-range temporal correlation dynamics) were analyzed. Learning outcomes were assessed at the lexical and semantic levels. Psychological variables measured using Amthauer’s test (verbal abilities), BIS/BAS scales (motivation), and the MSTAT-1 (ambiguity tolerance) and alpha oscillation parameters were factored. Results. Better recognition of novel words was related to two factors which had high factor loadings for all measured alpha oscillation parameters, indicating the role of attention networks and respective neural activity for enabling information processing. More successful learners had lower P200 amplitude, which also suggests higher attention-system involvement. Another factor predicted better acquisition of word meanings for less ambiguity-tolerant students, while the factor which pooled logical conceptual thinking ability and persistence in goal-reaching, positively correlated with acquisition of both word forms and meanings. Conclusion. The psychological factors predominantly correlated with word-learning success in semantic tasks, while neurophysiological variables were linked to performance in the recognition task.

Hearing Two Things at Once: Neurophysiological Indices of Speech Segregation and Identification

2005 ◽  
Vol 17 (5) ◽  
pp. 811-818 ◽  
Author(s):  
Claude Alain ◽  
Karen Reinke ◽  
Yu He ◽  
Chenghua Wang ◽  
Nancy Lobaugh
Keyword(s):  
Event Related Potentials ◽  
Auditory Scene Analysis ◽  
Scene Analysis ◽  
Negative Wave ◽  
Vowel Identification ◽  
Multistage Model ◽  
Speech Segregation ◽  
Fundamental Frequencies ◽  
Auditory Scene ◽  
Related Potentials

The discrimination of concurrent sounds is paramount to speech perception. During social gatherings, listeners must extract information from a composite acoustic wave, which sums multiple individual voices that are simultaneously active. The observers' ability to identify two simultaneously presented vowels improves with increasing separation between the fundamental frequencies (f0) of the two vowels. Event-related potentials to stimuli presented during attend and ignore conditions revealed activity between 130 and 170 msec after sound onset that reflected the f0 differences between the two vowels. Another, more posterior and right-lateralized, negative wave maximal at 250 msec, and a central-parietal slow negativity were observed only during vowel identification and may index stimulus categorization. This sequence of neural events supports a multistage model of auditory scene analysis in which the spectral pattern of each vowel constituent is automatically extracted and then matched against representations of those vowels in working memory.

Reactivity and Event-Related Potentials in Attentional Tests: Effect of Training

2002 ◽  
Vol 94 (3) ◽  
pp. 817-833 ◽  
Author(s):  
Giuliano Fontani ◽  
Leda Lodi
Keyword(s):  
Reaction Time ◽  
Selective Attention ◽  
Event Related Potentials ◽  
Stimulus Onset ◽  
Negative Wave ◽  
Geometric Figure ◽  
Trained Subjects ◽  
Geometric Figures ◽  
Close Relationship ◽  
Related Potentials

To study the effects of training on reactivity and event-related potentials a complex attentional shifting test involving reaction time was administered (Test 1) to 24 healthy, young students. After five days, 12 subjects were tested with the same procedure (Test 2) without training (Untrained Subjects) while 12 repeated the test at the fifth day after four days of training (Trained Subjects). During Tests 1 and 2, event-related potentials were recorded by electroencephalogram. The task consisted of each subject responding to a stimulus of a letter appearing in the centre of a geometric figure on the screen of a computer monitor. In the prestimulus period black points were drawn and crowded randomly into a zone of the screen. The geometric figure and the letter were shown in the centre of the crowding. There were two letters and four geometric figures randomly combined in different ways. The subject had to press different keys of the computer keyboard when specific combinations appeared. The averaged event-related potentials were characterized by a negative wave with a close relationship to selective attention before the onset of the stimulus of a geometric figure followed by letters. After the stimulus onset, a P3 complex was recorded. Trained subjects were no different from untrained subjects in Test 1, while in Test 2 they had a shorter reaction time, an earlier peak of the selective attention related wave and P3, and a higher amplitude for the P3 complex. These measures and the correlations between them can be considered an index of the training effect. Thus, these tests could be used for evaluation of the attentional style and its modification with training.

scholarly journals Time dependent effects of stress prior to encoding on event-related potentials and 24h delayed retrieval

2013 ◽  
Vol 38 (12) ◽  
pp. 3057-3069 ◽  
Author(s):  
Conny W.E.M. Quaedflieg ◽  
Lars Schwabe ◽  
Thomas Meyer ◽  
Tom Smeets
Keyword(s):  
Event Related Potentials ◽  
Time Dependent ◽  
Related Potentials ◽  
Effects Of Stress

scholarly journals Neurolinguistics

2006 ◽  
Vol 39 (3) ◽  
pp. 234-238
Keyword(s):  
Second Language ◽  
Cognitive Neuroscience ◽  
Brain Research ◽  
Right Hemisphere ◽  
Word Reading ◽  
Event Related Potentials ◽  
Oscillatory Activity ◽  
Max Planck ◽  
Brain Sciences ◽  
Related Potentials

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