Event related brain potentials and cognitive processing: Implications for navy training.

1981 ◽  
Author(s):  
Gregory W. Lewis ◽  
Pat-Anthony Federico ◽  
Jeffrey N. Froning ◽  
Marlene Calder
Keyword(s):  
Cognitive Processing ◽  
Brain Potentials

Skipping Breakfast Affects the Early Steps of Cognitive Processing

2019 ◽  
Vol 33 (2) ◽  
pp. 109-118
Author(s):  
Andrés Antonio González-Garrido ◽  
Jacobo José Brofman-Epelbaum ◽  
Fabiola Reveca Gómez-Velázquez ◽  
Sebastián Agustín Balart-Sánchez ◽  
Julieta Ramos-Loyo
Keyword(s):  
Working Memory ◽  
Cognitive Processing ◽  
Task Difficulty ◽  
Brain Activity ◽  
Reaction Times ◽  
Brain Potentials ◽  
Brain Functioning ◽  
Attentional Processes ◽  
Electrical Brain Activity ◽  
Skipping Breakfast

Abstract. It has been generally accepted that skipping breakfast adversely affects cognition, mainly disturbing the attentional processes. However, the effects of short-term fasting upon brain functioning are still unclear. We aimed to evaluate the effect of skipping breakfast on cognitive processing by studying the electrical brain activity of young healthy individuals while performing several working memory tasks. Accordingly, the behavioral results and event-related brain potentials (ERPs) of 20 healthy university students (10 males) were obtained and compared through analysis of variances (ANOVAs), during the performance of three n-back working memory (WM) tasks in two morning sessions on both normal (after breakfast) and 12-hour fasting conditions. Significantly fewer correct responses were achieved during fasting, mainly affecting the higher WM load task. In addition, there were prolonged reaction times with increased task difficulty, regardless of breakfast intake. ERP showed a significant voltage decrement for N200 and P300 during fasting, while the amplitude of P200 notably increased. The results suggest skipping breakfast disturbs earlier cognitive processing steps, particularly attention allocation, early decoding in working memory, and stimulus evaluation, and this effect increases with task difficulty.

scholarly journals Infant cognition includes the potentially human-unique ability to encode embedding

2018 ◽  
Vol 4 (11) ◽  
pp. eaar8334 ◽  
Author(s):  
M. Winkler ◽  
J. L. Mueller ◽  
A. D. Friederici ◽  
C. Männel
Keyword(s):  
Cognitive Processing ◽  
Comparative Studies ◽  
Human Cognition ◽  
Infant Cognition ◽  
Brain Potentials ◽  
Auditory Oddball ◽  
Brain Responses ◽  
Nested Relations ◽  
Unique Ability ◽  
Human Specific

Human cognition relies on the ability to encode complex regularities in the input. Regularities above a certain complexity level can involve the feature of embedding, defined by nested relations between sequential elements. While comparative studies suggest the cognitive processing of embedding to be human specific, evidence of its ontogenesis is lacking. To assess infants’ ability to process embedding, we implemented nested relations in tone sequences, minimizing perceptual and memory requirements. We measured 5-month-olds’ brain responses in two auditory oddball paradigms, presenting standard sequences with one or two levels of embedding, interspersed with infrequent deviant sequences violating the established embedding rules. Brain potentials indicate that infants detect embedding violations and thus appear to track nested relations. This shows that the ability to encode embedding may be part of the basic human cognitive makeup, which might serve as scaffolding for the acquisition of complex regularities in language or music.

Event-related brain potentials and second language learning: syntactic processing in late L2 learners at different L2 proficiency levels

2010 ◽  
Vol 26 (1) ◽  
pp. 43-74 ◽  
Author(s):  
Janet G. van Hell ◽  
Natasha Tokowicz
Keyword(s):  
Second Language ◽  
Cognitive Processing ◽  
Syntactic Structure ◽  
Syntactic Processing ◽  
Exact Nature ◽  
L2 Proficiency ◽  
Brain Potentials ◽  
L2 Learners ◽  
L2 Learning ◽  
Different Levels

There are several major questions in the literature on late second language (L2) learning and processing. Some of these questions include: Can late L2 learners process an L2 in a native-like way? What is the nature of the differences in L2 processing among L2 learners at different levels of L2 proficiency? In this article, we review studies that addressed these questions using event-related brain potentials (ERPs) in late learners and that focused on syntactic processing. ERPs provide an on-line, millisecond-by-millisecond record of the brain’s electrical activity during cognitive processing. ERP measures can thus provide valuable information on the timing and degree of neural activation as language processing (here: syntactic processing in L2) unfolds over time. After discussing the use of ERPs for the study of L2 learning and processing, we review electrophysiological studies on syntactic and morphosyntactic processing in late L2 learners with different levels of L2 proficiency. The currently available evidence indicates that patterns of neural activity in the brain during syntactic and morphosyntactic processing can be modulated by various, possibly interrelated, factors including the similarity or dissimilarity of syntactic structures in L2 and L1, the exact nature of the syntactic structure L2 learners seek to comprehend and the concomitant expectancies they can generate with regard to violations in this structure, and the L2 learners’ level of L2 proficiency. Together these studies show that ERPs can successfully elucidate subtle differences in syntactic processing between L2 learners and native speakers, and among L2 learners at different levels of L2 proficiency, which are difficult to detect or that might have remained undetected with behavioural measures.

scholarly journals Processing Tonal Modulations: An ERP Study

2003 ◽  
Vol 15 (8) ◽  
pp. 1149-1159 ◽  
Author(s):  
Stefan Koelsch ◽  
Thomas Gunter ◽  
Erich Schröger ◽  
Angela D. Friederici
Keyword(s):  
Working Memory ◽  
Cognitive Processing ◽  
Cognitive Processes ◽  
Neural Correlates ◽  
Tonal Music ◽  
Brain Potentials ◽  
Frontal Negativity ◽  
Anterior Negativity ◽  
Harmonic Stability ◽  
Musical Sequence

A common stylistic element of Western tonal music is the change of key within a musical sequence (known as modulation in musical terms). The aim of the present study was to investigate neural correlates of the cognitive processing of modulations with event-related brain potentials. Participants listened to sequences of chords that were infrequently modulating. Modulating chords elicited distinct effects in the event-related brain potentials: an early right anterior negativity reflecting the processing of a violation of musical regularities and a late frontal negativity taken to reflect processes of harmonic integration. Additionally, modulations elicited a tonic negative potential suggested to reflect cognitive processes characteristic for the processing of tonal modulations, namely, the restructuring of the “hierarchy of harmonic stability” (which specifies musical expectations), presumably entailing working memory operations. Participants were “nonmusicians”; results thus support the hypothesis that nonmusicians have a sophisticated (implicit) knowledge about musical regularities.

Cognitive performance and event-related brain potentials under simulated high altitudes

1993 ◽  
Vol 74 (4) ◽  
pp. 1735-1741 ◽  
Author(s):  
M. Kida ◽  
A. Imai
Keyword(s):  
Reaction Time ◽  
Cognitive Processing ◽  
Hypobaric Hypoxia ◽  
Event Related Potentials ◽  
Slow Waves ◽  
High Altitudes ◽  
Brain Potentials ◽  
Sensory Discrimination ◽  
Related Potentials ◽  
P3 Component

The effects of hypobaric hypoxia on cognitive processing in humans were studied by recording event-related potentials (ERPs) from the scalp in a go/no-go reaction time (RT) paradigm under various simulated high altitudes. Most subjects indicated abrupt impairment of RT at high altitudes. RTs lengthened in association with changes in latency and amplitude of the N2-P3 components, reflecting sensory discrimination and evaluation processes. Some subjects did not suffer any changes in RT up to an extremely high altitude of 6,000 m. In the latter case, although the N2-P3 components did not undergo any changes, the P3 component was followed by a sequence of negative on-going (frontal maximum) and positive on-going (parietal maximum) slow waves. The amplitudes of these slow waves increased as altitude increased. Although these same waves appeared in the ERPs of subjects who demonstrated the increase in RTs at high altitudes, when the subjects failed in the RT task, both of the slow waves either disappeared or diminished. Such slow waves may be associated with attempts to maintain RTs against the deteriorative effects of hypobaric hypoxia.

scholarly journals Brain Indices of Music Processing: “Nonmusicians” are Musical

2000 ◽  
Vol 12 (3) ◽  
pp. 520-541 ◽  
Author(s):  
Stefan Koelsch ◽  
Tomas Gunter ◽  
Angela D. Friederici ◽  
Erich Schröger
Keyword(s):  
Cognitive Processing ◽  
Systematic Research ◽  
Musical Ability ◽  
Brain Potentials ◽  
Task Relevance ◽  
Brain Waves ◽  
Frontal Negativity ◽  
Harmonic Context ◽  
Anterior Negativity ◽  
Musical Context

Only little systematic research has examined event-related brain potentials (ERPs) elicited by the cognitive processing of music. The present study investigated how music processing is influenced by a preceding musical context, affected by the task relevance of unexpected chords, and influenced by the degree and the probability of violation. Four experiments were conducted in which “nonmusicians” listened to chord sequences, which infrequently contained a chord violating the sound expectancy of listeners. Integration of in-key chords into the musical context was reflected as a late negative-frontal deflection in the ERPs. This negative deflection declined towards the end of a chord sequence, reflecting normal buildup of musical context. Brain waves elicited by chords with unexpected notes revealed two ERP effects: an early right-hemispheric preponderant-anterior negativity, which was taken to reflect the violation of sound expectancy; and a late bilateral-frontal negativity. The late negativity was larger compared to in-key chords and taken to reflect the higher degree of integration needed for unexpected chords. The early right-anterior negativity (ERAN) was unaffected by the task relevance of unexpected chords. The amplitudes of both early and late negativities were found to be sensitive to the degree of musical expectancy induced by the preceding harmonic context, and to the probability for deviant acoustic events. The employed experimental design opens a new field for the investigation of music processing. Results strengthen the hypothesis of an implicit musical ability of the human brain.

Conceptual Processing in Music as Revealed by N400 Effects on Words and Musical Targets

2009 ◽  
Vol 21 (10) ◽  
pp. 1882-1892 ◽  
Author(s):  
Jérôme Daltrozzo ◽  
Daniele Schön
Keyword(s):  
Cognitive Processing ◽  
Semantic Processing ◽  
Linguistic Context ◽  
N400 Effect ◽  
Brain Potentials ◽  
Conceptual Processing ◽  
Electrophysiological Responses ◽  
Musical Excerpts ◽  
N400 Component ◽  
Nature Neuroscience

The cognitive processing of concepts, that is, abstract general ideas, has been mostly studied with language. However, other domains, such as music, can also convey concepts. Koelsch et al. [Koelsch, S., Kasper, E., Sammler, D., Schulze, K., Gunter, T., & Friederici, A. D. Music, language and meaning: Brain signatures of semantic processing. Nature Neuroscience, 7, 302–307, 2004] showed that 10 sec of music can influence the semantic processing of words. However, the length of the musical excerpts did not allow the authors to study the effect of words on musical targets. In this study, we decided to replicate Koelsch et al. findings using 1-sec musical excerpts (Experiment 1). This allowed us to study the reverse influence, namely, of a linguistic context on conceptual processing of musical excerpts (Experiment 2). In both experiments, we recorded behavioral and electrophysiological responses while participants were presented 50 related and 50 unrelated pairs (context/target). Experiments 1 and 2 showed a larger N400 component of the event-related brain potentials to targets following a conceptually unrelated compared to a related context. The presence of an N400 effect with musical targets suggests that music may convey concepts. The relevance of these results for the comprehension of music as a structured set of conceptual units and for the domain specificity of the mechanisms underlying N400 effects are discussed.

Involuntary Orienting of Attention to Nociceptive Events: Neural and Behavioral Signatures

2009 ◽  
Vol 102 (4) ◽  
pp. 2423-2434 ◽  
Author(s):  
Valéry Legrain ◽  
Caroline Perchet ◽  
Luis García-Larrea
Keyword(s):  
Evoked Potentials ◽  
Cognitive Processing ◽  
Reaction Times ◽  
Neural System ◽  
Delayed Reaction ◽  
Brain Potentials ◽  
Behavioral Signatures ◽  
Cognitive Activities ◽  
Visual Targets ◽  
Standard Laser

Pain can involuntarily capture attention and disrupt pain-unrelated cognitive activities. The brain mechanisms of these effects were explored by laser- and visual-evoked potentials. Consecutive nociceptive laser stimuli and visual stimuli were delivered in pairs. Subjects were instructed to ignore nociceptive stimuli while performing a task on visual targets. Because involuntary attention is particularly sensitive to novelty, in some trials (17%), unexpected laser stimuli were delivered on a different hand area (location-deviant) relative to the more frequent standard laser stimuli. Compared with frequent standard laser stimuli, deviant stimuli enhanced all nociceptive-evoked brain potentials (laser N1, N2, P2a, P2b). Deviant laser stimuli also decreased the amplitude of late latency–evoked responses (visual N2-P3) to the subsequent visual targets and delayed reaction times to them. The data confirm that nociceptive processing competes with pain-unrelated cognitive activities for attentional resources and that concomitant nociceptive events affect behavior by depressing attention allocation to ongoing cognitive processing. The laser-evoked potential magnitude reflected the engagement of attention to the novel nociceptive stimuli. We conclude that the laser-evoked potentials index the activity of a neural system involved in the detection of novel salient stimuli in order to focus attention and prioritize action to potentially damaging dangers.

scholarly journals Effects of Musical Expertise and Boundary Markers on Phrase Perception in Music

2006 ◽  
Vol 18 (3) ◽  
pp. 472-493 ◽  
Author(s):  
Christiane Neuhaus ◽  
Thomas R. Knösche ◽  
Angela D. Friederici
Keyword(s):  
Harmonic Function ◽  
Cognitive Processing ◽  
Acoustic Cues ◽  
Top Down ◽  
Neural Correlate ◽  
Brain Potentials ◽  
Phrase Boundary ◽  
Musical Expertise ◽  
Pause Length ◽  
Closure Positive Shift

A neural correlate for phrase boundary perception in music has recently been identified in musicians. It is called music closure positive shift (“music CPS”) and has an equivalent in the perception of speech (“language CPS”). The aim of the present study was to investigate the influence of musical expertise and different phrase boundary markers on the music CPS, using event-related brain potentials (ERPs) and event-related magnetic fields (ERFs). Musicians and nonmusicians were tested while listening to binary phrased melodies. ERPs and ERFs of both subject groups differed considerably from each other. Phrased melody versions evoked an electric CPS and a magnetic CPSm in musicians, but an early negativity and a less pronounced CPSm in nonmusicians, suggesting different perceptual strategies for both subject groups. Musicians seem to process musical phrases in a structured manner similar to language. Nonmusicians, in contrast, are thought to detect primarily discontinuity in the melodic input. Variations of acoustic cues in the vicinity of the phrase boundary reveal that the CPS is influenced by a number of parameters that are considered to indicate phrasing in melodies: pause length, length of the last tone preceding the pause, and harmonic function of this last tone. This is taken as evidence that the CPS mainly reflects higher cognitive processing of phrasing, rather than mere perception of pauses. Furthermore, results suggest that the ERP and MEG methods are sensitive to different aspects within phrase perception. For both subject groups, qualitatively different ERP components (CPS and early negativity) seem to reflect a top-down activation of general but different phrasing schemata, whereas quantitatively differing MEG signals appear to reflect gradual differences in the bottom-up processing of acoustic boundary markers.

The S-SH Confusion Test and the Effects of Frequency Lowering

2019 ◽  
Vol 62 (5) ◽  
pp. 1486-1505
Author(s):  
Joshua M. Alexander
Keyword(s):  
Cognitive Processing ◽  
Hearing Aids ◽  
Response Times ◽  
Nonlinear Frequency ◽  
Low Frequencies ◽  
Frequency Compression ◽  
Negative Side ◽  
Minimal Word ◽  
Low Pass ◽  
Negative Side Effects

PurposeFrequency lowering in hearing aids can cause listeners to perceive [s] as [ʃ]. The S-SH Confusion Test, which consists of 66 minimal word pairs spoken by 6 female talkers, was designed to help clinicians and researchers document these negative side effects. This study's purpose was to use this new test to evaluate the hypothesis that these confusions will increase to the extent that low frequencies are altered.MethodTwenty-one listeners with normal hearing were each tested on 7 conditions. Three were control conditions that were low-pass filtered at 3.3, 5.0, and 9.1 kHz. Four conditions were processed with nonlinear frequency compression (NFC): 2 had a 3.3-kHz maximum audible output frequency (MAOF), with a start frequency (SF) of 1.6 or 2.2 kHz; 2 had a 5.0-kHz MAOF, with an SF of 1.6 or 4.0 kHz. Listeners' responses were analyzed using concepts from signal detection theory. Response times were also collected as a measure of cognitive processing.ResultsOverall, [s] for [ʃ] confusions were minimal. As predicted, [ʃ] for [s] confusions increased for NFC conditions with a lower versus higher MAOF and with a lower versus higher SF. Response times for trials with correct [s] responses were shortest for the 9.1-kHz control and increased for the 5.0- and 3.3-kHz controls. NFC response times were also significantly longer as MAOF and SF decreased. The NFC condition with the highest MAOF and SF had statistically shorter response times than its control condition, indicating that, under some circumstances, NFC may ease cognitive processing.ConclusionsLarge differences in the S-SH Confusion Test across frequency-lowering conditions show that it can be used to document a major negative side effect associated with frequency lowering. Smaller but significant differences in response times for correct [s] trials indicate that NFC can help or hinder cognitive processing, depending on its settings.

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