A Brain Event Related to the Making of a Sensory Discrimination

Ritter, Walter; Simson, Richard; Vaughan, Herbert G.; Friedman, David

doi:10.1126/science.424760

Cited by 361 publications

(175 citation statements)

References 15 publications

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“…The late component was consistent with the time window for the N2 potential which correlates with the decision process for RT (Ritter et al, 1979). Early components (P100) were unchanged, suggesting that processes affected were for sensory discrimination and target selection.…”

Section: Vepsupporting

confidence: 67%

Vigilance, alertness, or sustained attention: physiological basis and measurement

Oken

Salinsky

Elsas

2006

Clinical Neurophysiology

658

463

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Vigilance is a term with varied definitions but the most common usage is sustained attention or tonic alertness. This usage of vigilance implies both the degree of arousal on the sleep-wake axis and the level of cognitive performance. There are many interacting neural and neurotransmitter systems that affect vigilance. Most studies of vigilance have relied on states where the sleep-wake state is altered, e.g. drowsiness, sleep-deprivation, and CNS-active drugs, but there are factors ranging from psychophysics to motivation that may impact vigilance. While EEG is the most commonly studied physiologic measure of vigilance, various measures of eye movement and of autonomic nervous system activity have also been used. This review paper discusses the underlying neural basis of vigilance and its assessment using physiologic tools. Since, assessment of vigilance requires assessment of cognitive function this aspect is also discussed.

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Section: Vepsupporting

confidence: 67%

Vigilance, alertness, or sustained attention: physiological basis and measurement

Oken

Salinsky

Elsas

2006

Clinical Neurophysiology

658

463

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“…In contrast, the fronto-central distribution of the negativity found here is reminiscent of the scalp distribution of the N200 component that has been widely described in the ERP literature as reflecting a general mismatch effect [32,33]. The occurrence of the N200 is often linked to a subsequent positivity, P3a, and forms the N2-P3a complex, which has been shown to develop in response to surprising, unexpected stimuli.…”

Section: Discussionsupporting

confidence: 52%

Processing pitch and duration in music reading: a RT–ERP study

Schön

Besson

2002

Neuropsychologia

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The originality of this study is to examine the processing of pitch and duration in music reading, using both electrophysiological and behavioral methods. Specifically, it was of interest to determine whether pitch and duration in music reading are processed independently or jointly. A probe, comprising a key and time signature was presented, and participants were required to compute the tonic and/or the best fitting duration. A target note followed the probe and participants made a match/mismatch judgment on the dimension they were required to analyze (i.e. pitch or duration). We hypothesized that, if pitch and duration are processed independently results should show no interference of the irrelevant dimension on the relevant. Results showed that early differences emerged in the ERPs as a function of the task to be performed on the target in block 1. Moreover, RTs were shorter in the pitch than in the duration task and for congruous than incongruous targets. In the ERPs, this congruity effect was reflected by a negative component, to incongruous targets. Most importantly, the congruency of the target note on the irrelevant dimension did not have any effect on the ERPs, suggesting that pitch and duration are processed independently.

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“…For example, a response associated with incomplete evaluation of the stimulus may lead to a lower P300 latency/RT correlation (Magliero et al 1984). Additionally, speed vs. accuracy instructions (Kutas et al 1977;McCarthy and Donchin 1983;Pfefferbaum et al 1983) and factors of task difficulty (Ritter et al 1979;Hillyard and Kutas 1983) can affect the observed association between ERP component latency and RT.…”

Section: Discussionmentioning

confidence: 99%