Increased cognitive load during pseudoword processing

2021 ◽  
Vol 25 (4) ◽  
pp. 289-309
Author(s):  
Lukša Matas ◽  
◽  
Marina Olujić Tomazin ◽  
Jelena Kuvač Kraljević ◽  
Gordana Hržica ◽  
...  
Keyword(s):  
Cognitive Load ◽  
Cognitive Processing ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Oddball Paradigm ◽  
Precise Control ◽  
New Words ◽  
Related Potentials ◽  
Unknown Words ◽  
Target Words

Pseudowords (words without semantic meaning) are often used as a control condition in linguistic cognitive experiments, with the expectation that such words, unlike real words, do not activate higher cognitive processes in the brain. However, other theories assume that pseudowords are perceived as new words, leading to an even higher cognitive response. The aim of this study was to investigate the cognitive load of processing a pseudoword by observing event-related potentials in a 3-stimulus oddball paradigm using real target words, real non-target words, and pseudowords as oddball stimuli. The results show a clear task-related P3b triggered by target words, but also a prominent P600 component triggered by pseudowords, indicating difficulty in the classification task due to unknown words. Surprisingly, N400 was decreased for pseudowords compared to target and non-target words at the locations where P3b and P600 were observed, suggesting that task-related effects might inhibit other aspects of cognitive processing. These results could lead to better understanding of the components that may overlap temporally and topographically, and to the more precise control of different cognitive generators involved in event-related potential experiments in pseudowords.

scholarly journals Embodiment of sleep-related words: evidence from event-related potentials

2020 ◽  
Author(s):  
Mareike J. Hülsemann ◽  
Björn Rasch
Keyword(s):  
Cognitive Processing ◽  
Word Processing ◽  
Body Position ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
The Body ◽  
Semantic Meaning ◽  
Related Potentials ◽  
Multimodal Networks ◽  
Lying Down

AbstractOur thoughts, plans and intentions can influence physiological sleep, but the underlying mechanisms are unknown. According to the theoretical framework of “embodied cognition”, the semantic content of cognitive processes is represented by multimodal networks in the brain which also include body-related functions. Such multimodal representation could offer a mechanism which explains mutual influences between cognition and sleep. In the current study we tested whether sleep-related words are represented in multimodal networks by examining the effect of congruent vs. incongruent body positions on word processing during wakefulness.We experimentally manipulated the body position of 66 subjects (50 females, 16 males, 19-40 years old) between standing upright and lying down. Sleep- and activity-related words were presented around the individual speech recognition threshold to increase task difficulty. Our results show that word processing is facilitated in congruent body positions (sleep words: lying down and activity words: standing upright) compared with incongruent body positions, as indicated by a reduced N400 of the event-related potential (ERP) in the congruent condition with the lowest volume. In addition, early sensory components of the ERP (N180 and P280) were enhanced, suggesting that words were also acoustically better understood when the body position was congruent with the semantic meaning of the word. However, the difference in ERPs did not translate to differences on a behavioural level.Our results support the prediction of embodied processing of sleep- and activity-related words. Body position potentially induces a pre-activation of multimodal networks, thereby enhancing the access to the semantic concepts of words related to current the body position. The mutual link between semantic meaning and body-related function could be a key element in explaining influences of cognitive processing on sleep.

Implicit need for affiliation and processing of emotional images: Event-related potential correlates

2018 ◽  
Vol 46 (2) ◽  
pp. 273-280
Author(s):  
Jianfeng Wang ◽  
Yan Wu ◽  
Lushi Jing
Keyword(s):  
Cognitive Processes ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Oddball Paradigm ◽  
Emotional Information ◽  
Need For Affiliation ◽  
Additional Information ◽  
Negative Images ◽  
Related Potentials ◽  
Emotional Information Processing

Implicit motives play an important role in the regulation of many basic cognitive processes, particularly in the stage of attention. We conducted a study with a sample of 58 college students to examine selective attention to emotional stimuli as a function of individual differences in the implicit need for affiliation (nAff). In an affective oddball paradigm, event-related potentials were recorded while participants viewed positive, neutral, and negative images of people. Results showed that individuals high in nAff elicited larger late positive potential amplitudes to negative images than those low in nAff did. These findings replicate and extend the results of a previous study focused on these relationships and provide additional information on the neural correlates of affiliation-related emotional information processing.

Auditory event-related potentials, neurocognition, and global functioning in drug naïve first-episode schizophrenia and bipolar disorder

2021 ◽  
pp. 1-10
Author(s):  
Xiaojing Li ◽  
Wei Deng ◽  
Rui Xue ◽  
Qiang Wang ◽  
Hongyan Ren ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Rating Scale ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
First Episode ◽  
Oddball Paradigm ◽  
Global Functioning ◽  
Adult Intelligence Scale ◽  
Related Potentials ◽  
Drug Naïve

Abstract Background Deficits in event-related potential (ERP) including duration mismatch negativity (MMN) and P3a have been demonstrated widely in chronic schizophrenia (SZ) but inconsistent findings were reported in first-episode patients. Psychotropic medications and diagnosis might contribute to different findings on MMN/P3a ERP in first-episode patients. The present study examined MMN and P3a in first episode drug naïve SZ and bipolar disorder (BPD) patients and explored the relationships among ERPs, neurocognition and global functioning. Methods Twenty SZ, 24 BPD and 49 age and sex-matched healthy controls were enrolled in this study. Data of clinical symptoms [Positive and Negative Symptoms Scale (PANSS), Young Manic Rating Scale (YMRS), Hamilton Depression Rating Scale (HAMD)], neurocognition [Wechsler Adult Intelligence Scale (WAIS), Cattell's Culture Fair Intelligence Test (CCFT), Delay Matching to Sample (DMS), Rapid Visual Information Processing (RVP)], and functioning [Functioning Assessment Short Test (FAST)] were collected. P3a and MMN were elicited using a passive auditory oddball paradigm. Results Significant MMN and P3a deficits and impaired neurocognition were found in both SZ and BPD patients. In SZ, MMN was significantly correlated with FAST (r = 0.48) and CCFT (r = −0.31). In BPD, MMN was significantly correlated with DMS (r = −0.54). For P3a, RVP and FAST scores were significant predictors in SZ, whereas RVP, WAIS and FAST were significant predictors in BPD. Conclusions The present study found deficits in MMN, P3a, neurocognition in drug naïve SZ and BPD patients. These deficits appeared to link with levels of higher-order cognition and functioning.

Induced Gamma Band Deficits in Early Psychosis

2009 ◽  
Vol 24 (S1) ◽  
pp. 1-1
Author(s):  
M. Constante ◽  
M. Shaikh ◽  
I. Williams ◽  
R. Murray ◽  
E. Bramon
Keyword(s):  
Cognitive Processing ◽  
Psychotic Disorders ◽  
Event Related Potentials ◽  
Gamma Band ◽  
Early Psychosis ◽  
Gamma Activity ◽  
Total Power ◽  
Oddball Paradigm ◽  
Time Frequency ◽  
Related Potentials

Objective:Abnormalities in event related potentials (ERPs) have long been looked at as markers of disease in Schizophrenia. Over recent years there is a trend in the field to move from averaged trials ERPs analysis in the time-voltage domain, to time-frequency single trials analysis. Oscillations in the Gamma band (30-50Hz) have received particular attention in the context of the theories of core deficits in neuronal synchronization in Schizophrenia. in this study we aimed at replicating previously found Gamma band deficits in a sample of Early Psychosis patients.Methods:EEG was collected from 15 patients and 15 age matched controls using an auditory oddball paradigm. Time-frequency analysis in the Gamma band was performed using a Morlet wavelet transform. We tested differences between the groups using the Wilcoxon rank sum test, given the nonparametric nature of the data, to compare each group's average single trial Gamma power, maximizing the signal-to-noise ratio.Results:Patients with Early Psychosis showed, following target tones, a reduction in the total power of Gamma band activation (p< 0.01) as well as in induced Gamma band activation (p< 0.01). This was observed in a late latency interval at 400-500ms. the late burst of Gamma activity was not found in the frequent condition, for neither subjects group.Conclusion:The findings are compatible with previous studies suggesting deficits in the late intrinsically generated cognitive processing of auditory stimuli in Schizophrenia, already present in its early stage. They add further evidence of deficits in neuronal synchronisation in the early stages of psychotic disorders.

scholarly journals Is cognitive processing affected in adults with hypospadias?: P300 study

Open Medicine ◽  
2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Hakan Tekeli ◽  
Hasan Koçoğlu ◽  
Cabir Alan ◽  
Mustafa Emir Tavşanlı ◽  
Halit Yaşar ◽  
...  
Keyword(s):  
Cognitive Processing ◽  
Event Related Potentials ◽  
P300 Amplitude ◽  
Military Hospital ◽  
Oddball Paradigm ◽  
Control Group ◽  
P300 Latency ◽  
Urogenital System ◽  
Cognitive Changes ◽  
Related Potentials

AbstractBackground: Hypospadias is a common urogenital system disorder. The frenulum, which is the most sensitive area of the glans penis, is not present in patients with hypospadias. This may lead to a failure in sexual and ejaculatory function, and cause emotional problems affecting cognitive processes.Aim: We aimed to study auditory Event Related Potentials (ERP) in patients with hypospadias to understand the status of cognitive function.Materials and Methods: Seventeen patients with hypospadias who presented to the Urology Outpatient Clinic of Çanakkale Military Hospital, and 11 healthy individuals of similar age were chosen. The auditory oddball paradigm with ERP from the Cz and Fz head regions were studied. The latency and amplitude of the P300 wave were measured.Results: Both, the study and control groups consisted of young males. Although the study group had a longer P300 latency and lower P300 amplitude when compared to control group, the results were not statistically significant (p: 0.059 and 0.346 respectively).Conclusion: Although the results are not statistically significant, our findings indicate that there may be cognitive changes in patients with hypospadias. Further studies of larger sample size and older patient cohorts are needed.

Attentional Bias in Patients with Decompensated Tinnitus: Prima Facie Evidence from Event-Related Potentials

2016 ◽  
Vol 21 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Zhicheng Li ◽  
Ruolei Gu ◽  
Xiangli Zeng ◽  
Weifang Zhong ◽  
Min Qi ◽  
...  
Keyword(s):  
Attentional Bias ◽  
Cognitive Processing ◽  
Right Hemisphere ◽  
Time Window ◽  
Acoustic Stimulus ◽  
Event Related Potentials ◽  
Oddball Paradigm ◽  
Control Group ◽  
Significant Difference ◽  
Related Potentials

Tinnitus refers to the auditory perception of sound in the absence of external sound or electric stimuli. The influence of tinnitus on cognitive processing is at the cutting edge of ongoing tinnitus research. In this study, we adopted an objective indicator of attentional processing, i.e. the mismatch negativity (MMN), to assess the attentional bias in patients with decompensated tinnitus. Three kinds of pure tones, D1 (8,000 Hz), S (8,500 Hz) and D2 (9,000 Hz), were used to induce event-related potentials (ERPs) in the normal ear. Employing the oddball paradigm, the task was divided into two blocks in which D1 and D2 were set as deviation stimuli, respectively. Only D2 induced a significant MMN in the tinnitus group, while neither D1 nor D2 was able to induce MMN in the control group. In addition, the ERPs in the left hemisphere, which were recorded within the time window of 90-150 ms (ERP90-150 ms), were significantly higher than those in the right hemisphere in the tinnitus group, while no significant difference was observed in the control group. Lastly, the amplitude of ERP90-150 ms in the tinnitus group was significantly higher than that in the control group. These findings suggest that patients with decompensated tinnitus showed automatic processing of acoustic stimuli, thereby indicating that these patients allocated more cognitive resources to acoustic stimulus processing. We suggest that the difficulty in disengaging or facilitated attention of patients might underlie this phenomenon. The limitations of the current study are discussed.

Auditory Event-Related Potentials and Reaction Times in Migraine Children

Cephalalgia ◽  
2004 ◽  
Vol 24 (7) ◽  
pp. 554-563 ◽  
Author(s):  
G Buodo ◽  
D Palomba ◽  
M Sarlo ◽  
C Naccarella ◽  
PA Battistella
Keyword(s):  
Cognitive Processing ◽  
Migraine Without Aura ◽  
Reaction Times ◽  
Event Related Potentials ◽  
P300 Amplitude ◽  
Oddball Paradigm ◽  
Auditory Event ◽  
N100 Amplitude ◽  
Related Potentials ◽  
Auditory Event Related Potentials

Cognitive processing was investigated interictally in 18 children with migraine without aura and 18 age-matched controls by measuring event-related potentials (ERPs) and reaction times (RTs) during an acoustic oddball paradigm. Results showed that N100 amplitude evoked by frequent stimuli was significantly smaller in patients compared with controls. Habituation of target P300 amplitude was observed in patients but not in controls. Mean RTs were equivalent in the two groups, but migraine children made more errors than controls.

Effects of Zolmitriptan (ZomigTM) on Central Serotonergic Neurotransmission as Assessed by Active Oddball Auditory Event-Related Potentials in Volunteers without Migraine

Cephalalgia ◽  
1999 ◽  
Vol 19 (2) ◽  
pp. 100-106 ◽  
Author(s):  
AM Hughes ◽  
R Dixon ◽  
A Dane ◽  
J Kemp ◽  
L Cummings ◽  
...  
Keyword(s):  
Plasma Concentrations ◽  
Event Related Potentials ◽  
Quantitative Eeg ◽  
Event Related Potential ◽  
Target Tone ◽  
Auditory Target ◽  
Auditory Stimuli ◽  
Point Estimate ◽  
Oddball Paradigm ◽  
Related Potentials

In this randomized, double-blind, three-period crossover trial, 24 healthy volunteers without migraine received zolmitriptan 5 mg, dexfenfluramine 15 mg or placebo orally. At 2, 6, and 24 h postdose, auditory stimuli of 1000 Hz (nontarget tone) and 2000 Hz (target tone) were randomly and binaurally presented in an active oddball paradigm (4:1 ratio). Cortical auditory evoked responses were recorded for 500 msec poststimulus. Plasma concentrations of zolmitriptan and a 17-lead quantitative EEG were assessed at the same timepoints. Relative to placebo, zolmitriptan reduced the maximum absolute amplitude, amplitude difference (from nontarget tone noise) and area under the curve of the cortical auditory target tone event-related potential (P300 ERP). The most dramatic effect of zolmitriptan was to diminish the point estimate of noise during the 200-400 msec poststimulus epoch. The effect of zolmitriptan appeared concentration dependent. The latency of the P300 ERP was unaffected by zolmitriptan and there was no clinically significant effect on the EEG. Modification by zolmitriptan of the cortical electrical activity evoked by auditory stimuli confirms a central action of this drug in humans, which appears to affect cortical information processing without global alteration of the quantitative EEG.

scholarly journals Does Creativity Influence Visual Perception? - An Event-Related Potential Study With Younger and Older Adults

2021 ◽  
Vol 12 ◽  
Author(s):  
Petra Csizmadia ◽  
István Czigler ◽  
Boglárka Nagy ◽  
Zsófia Anna Gaál
Keyword(s):  
Visual Processing ◽  
Healthy Aging ◽  
Early Stage ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Oddball Paradigm ◽  
Top Down ◽  
Early Visual Processing ◽  
Related Potentials ◽  
Creative Group

We do not know enough about the cognitive background of creativity despite its significance. Using an active oddball paradigm with unambiguous and ambiguous portrait paintings as the standard stimuli, our aim was to examine whether: creativity in the figural domain influences the perception of visual stimuli; any stages of visual processing; or if healthy aging has an effect on these processes. We investigated event related potentials (ERPs) and applied ERP decoding analyses in four groups: younger less creative; younger creative; older less creative; and older creative adults. The early visual processing did not differ between creativity groups. In the later ERP stages the amplitude for the creative compared with the less creative groups was larger between 300 and 500 ms. The stimuli types were clearly distinguishable: within the 300–500 ms range the amplitude was larger for ambiguous rather than unambiguous paintings, but this difference in the traditional ERP analysis was only observable in the younger, not elderly groups, who also had this difference when using decoding analysis. Our results could not prove that visual creativity influences the early stage of perception, but showed creativity had an effect on stimulus processing in the 300–500 ms range, in indexing differences in top-down control, and having more flexible cognitive control in the younger creative group.

scholarly journals N100, N200, and P300 Auditory Event-Related Potentials Depending on Handedness and Response Tasks such as Button Pressing and Mental Counting

2020 ◽  
Vol 16 (4) ◽  
pp. 314-320
Author(s):  
Jinsook Kim ◽  
Kieun Lee ◽  
Eunsung Lee
Keyword(s):  
Event Related Potentials ◽  
Event Related Potential ◽  
P300 Amplitude ◽  
Oddball Paradigm ◽  
Auditory Event ◽  
Counting Task ◽  
Left Handed ◽  
Significant Difference ◽  
Related Potentials ◽  
Mental Counting

Purpose: This study was to determine the effects of response tasks, such as button pressing and mental counting, and handedness on N100, N200, and P300 auditory event-related potential (AERP).Methods: A total of 50 normal-hearing young adults with the average age of 21.6 (±1.5) years participated in this study. Among them, 15 men and 15 women were right-handed and 10 men and 10 women were left-handed. An oddball paradigm was used to deliver 30 stimuli of 2 kHz target tone bursts and 120 stimuli of 1 kHz nontarget tone bursts. The stimuli were presented at 70 dB sound pressure level with the rate of 1/s.Results: The button pressing task elicited significantly smaller N100 and larger P300 amplitudes than the mental counting task. N200 latency was significantly lower and P300 amplitude was higher in left-handed participants than those who are right-handed. Appearance percentages of right-/left-handed participants for N100, N200, and P300 were 80/95%, 85/85%, and 75/75% for the button pressing task and 80/90%, 80/80%, and 70/70% for mental counting task, respectively.Conclusion: The significant difference in appearance percentage between response tasks supported that P300 was a strong endogenous potential. N100 and N200 were thought to have both endogenous and exogenous characteristics. A more sensitive approach in selecting the task of response for the target stimuli and careful consideration for the handedness is necessary for AERP recordings.

Sign in / Sign up

Export Citation Format

Share Document