Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"P3b"”.
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Age-Related Changes to the P3a and P3b
… amplitude, latency and topography of the P3a and P3b (Brown, Marsh, & LaRue, 1983; Fein & Turetsky, 1989; Fjell & Walhovd, 2001; Fjell & Walhovd, 2003; Fjell & Walhovd, 2004; Fjell, Walhovd, & Reinvang, 2005; Fjell & Walhovd, 2005a; Fjell & Walhovd, 2005b; Fjell, Walhovd, Fischl, & Reinvang, 2007; …
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THE RELATIONSHIP BETWEEN P300 EVOKED POTENTIALS AND PREFRONTAL CORTEX OXYGEN USE: A COMBINED EEG AND NIRS STUDY
<p>The P300 subcomponent, P3b, is an event related potential detected at the scalp surface when a working memory comparison results in differences between the contents of working memory and incoming stimulus information. Previous research has indicated that as infrequent targets become more …
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THE MENTAL NOISE HYPOTHESIS: A RELATION BETWEEN NEUROTICISM AND P3 LATENCY VARIANCE IN A STROOP-STYLE REACTION TIME TASK
… cognition, single trial latency variance of the P3b event related potential was assessed in individuals who scored high and low on neuroticism inventories. The primary analysis in this paper failed to provide support for P3b latency variance as the neural generator of the more variable mental …
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ApoE4 Genotype as a Moderator of Brain Responses to Target Stimuli Prior and Subsequent to Smoking Abstinence
… (EEG) and the oddball-related P3b event-related potential (ERP) were used to better characterize the potential moderating effects of ApoE on P3b ERP amplitude changes associated with overnight nicotine deprivation in dependent smokers. Results showed a significant interaction …
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Regulating visual awareness during binocular rivalry
… level of processing? Chapter 2 suggests that P3b activity is associated with reversal-related activity. Specifically, that P3b activity indexes the immediacy/intensity of updates to consciousness during binocular rivalry. Sensory evoked data (i.e. P1/N1 ERP activity) reported in Chapters 2 and …
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Gender Differences in Task Switching: An Event-Related Potential Study
… in relation to reaction times, P2 and P3b brainwave latencies or amplitudes. However, the study found a difference in the N2 component between genders. Moreover, the study found differences in the topographic distribution of ERP components which may indicate that gender differences in …
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Using EEG to investigate premature aging and cognitive decline in adults with Down's Syndrome
… mismatch negativity (MMN) and P300 (P3a and P3b), were chosen for exploration with cross-sectional and longitudinal investigations. The thesis begins by exploring how the ERPs differ for a cross-section of 36 adults with DS and 39 age- and gender-matched TD controls. As expected, the MMN …
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A computer simulation model for investigating the effect of land application of sludge on runoff water quality
… NH4 â N, and sediment=bound phosphorus (P3b) in runoff using enrichment ratios. The transport of soluble nutrients, nitrate-N (NO3 â N), NH4 â N, and soluble P (PTF), is estimated using extraction coefficients.
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Behaviour disorders dopamine-related
… disorder, P3a monsters lower latency than the P3b, as evident in healthy subjects.
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Maturation of Speech Discrimination and Attentional Requirements in Late Childhood
… in the late discriminatory negativity (LDN) and P3b.</p> <p>Together, these two experiments highlight the value of expanding the scope of examination for speech discrimination to consider a broader range of ages than leading models, which tend to emphasize early life. Our findings of continued …
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THE DEVELOPMENT OF COGNITIVE CONTROL DURING CHILDHOOD: A NEUROCOGNITIVE PERSPECTIVE
… of neural activation in a component known as the P3b. Executive functions were differentially associated with cognitive control strategy use. Specifically, better working memory and inhibitory control skills were related to proactive strategy use and increased context sensitivity. This study is …
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Prediction and perception in the multisensory brain: Supramodal and modality-specific mechanisms of sensory predictions across cortical hierarchies
… paradigm can dissociate higher-order P3b-like global effects and lower-order MMN-like local effects in the auditory and the somatosensory modality. I will show that cortical representations supporting the global effect are maintained in time in networks shared between the senses. …
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THE EFFECTS OF AN ACUTE BOUT OF EXERCISE UPON BEHAVIORAL RESPONSES TO AND NEUROPHYSIOLOGICAL INDICES OF ATTENTION ALLOCATION IN CHILDREN AND ADULTS
… reaction time percent difference, and P3a and P3b amplitude, respectively. Moreover, the findings indicate no age-related differential effects of acute exercise on these same indices of attention. However, absolute reaction time results indicate a significant main effect for group (F (1, 21) …
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Connective ties in discourse : three ERP-studies on causal, temporal and concessive connective ties and their influence on language processing
… incoherent discourses, as well as the P3b found for concessive connective ties in the comparison between causal and concessive connective ties gave reason to assume that the semantic content of connective ties is made use of in incremental processing, and that the relation signaled by …
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An exploration of pre-attentive visual discrimination using event-related potentials
… task was incorporated into the paradigm, a P3b component was elicited consistent with the allocation of attentional resources to the task. However, visual discrimination components were attenuated revealing that the illusory figure was unable to command all attentional resources from the …