Knowledge of Stimulus Repetition Affects the Magnitude and Spatial Distribution of Low-Frequency Event-Related Brain Potentials

Clementz, Brett A.; Barber, Stefanie K.; Dzau, Jacqueline R.

doi:10.1159/000064444

Cited by 60 publications

(34 citation statements)

References 33 publications

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“…The reason why this further N1 amplitude decrement only took place in our predictable timing condition needs more consideration. For example, N1 amplitude decreases with temporal and pitch expectations (Lange, 2009), with previous knowledge of the sequence of stimulation (Clementz et al, 2002), and to self-generated tones (Baess et al, 2011). The common aspect in these different studies is that they support the involvement of predictive mechanisms in N1 amplitude attenuation.…”

Section: Discussionmentioning

confidence: 87%

Interactions between “What” and “When” in the Auditory System: Temporal Predictability Enhances Repetition Suppression

Costa‐Faidella

Baldeweg²,

Grimm³

et al. 2011

J. Neurosci.

144

140

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Neural activity in the auditory system decreases with repeated stimulation, matching stimulus probability in multiple timescales. This phenomenon, known as stimulus-specific adaptation, is interpreted as a neural mechanism of regularity encoding aiding auditory object formation. However, despite the overwhelming literature covering recordings from single-cell to scalp auditory-evoked potential (AEP), stimulation timing has received little interest. Here we investigated whether timing predictability enhances the experience-dependent modulation of neural activity associated with stimulus probability encoding. We used human electrophysiological recordings in healthy participants who were exposed to passive listening of sound sequences. Pure tones of different frequencies were delivered in successive trains of a variable number of repetitions, enabling the study of sequential repetition effects in the AEP. In the predictable timing condition, tones were delivered with isochronous interstimulus intervals; in the unpredictable timing condition, interstimulus intervals varied randomly. Our results show that unpredictable stimulus timing abolishes the early part of the repetition positivity, an AEP indexing auditory sensory memory trace formation, while leaving the later part (ϳϾ200 ms) unaffected. This suggests that timing predictability aids the propagation of repetition effects upstream the auditory pathway, most likely from association auditory cortex (including the planum temporale) toward primary auditory cortex (Heschl's gyrus) and beyond, as judged by the timing of AEP latencies. This outcome calls for attention to stimulation timing in future experiments regarding sensory memory trace formation in AEP measures and stimulus probability encoding in animal models.

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Section: Discussionmentioning

confidence: 87%

Interactions between “What” and “When” in the Auditory System: Temporal Predictability Enhances Repetition Suppression

Costa‐Faidella

Baldeweg²,

Grimm³

et al. 2011

J. Neurosci.

144

140

View full text Add to dashboard Cite

show abstract

“…Further, a detectable influence of top-down attention on stimulus-evoked beta activity has not been found. In fact the demonstrable effect of this manipulation on non-invasive neurophysiological measures appears to be manifest in frequency bands below beta (<10 Hz: Clementz et al, 2002) or above beta (>30 Hz: Debener et al, 2003;Tiitinen et al, 1993). Considered within the model described above, and in agreement with Yamaguchi et al (2004), this implies that top-down attention does not necessarily modify the neural computation of stimulus-driven salience.…”

Section: Neural Computation Of Stimulus-driven Saliencementioning

confidence: 93%

“…Although oscillatory neural activity has previously been measured during the sensory gating paradigm (Clementz et al, 2002;Crawford et al, 2002;Hong et al, 2004), the specific frequency bands studied have generally not been tightly constrained by the theory of gammato-beta transition. Nevertheless, previous findings are consistent with the present study.…”

Section: Comparison With Previous Studies Of Sensory Gatingmentioning

confidence: 99%

Gamma and beta neural activity evoked during a sensory gating paradigm: Effects of auditory, somatosensory and cross-modal stimulation

Kisley

Cornwell

2006

Clinical Neurophysiology

116

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Objective.-Stimulus-driven salience is determined involuntarily, and by the physical properties of a stimulus. It has recently been theorized that neural coding of this variable involves oscillatory activity within cortical neuron populations at beta frequencies. This was tested here through experimental manipulation of inter-stimulus interval (ISI).Methods.-Non-invasive neurophysiological measures of event-related gamma (30-50 Hz) and beta (12-20 Hz) activity were estimated from scalp-recorded evoked potentials. Stimuli were presented in a standard "paired-stimulus" sensory gating paradigm, where the S1 (conditioning) stimulus was conceptualized as long-ISI, or "high salience," and the S2 (test) stimulus as short-ISI, or "low salience." Three separate studies were conducted: auditory stimuli only (N=20 participants), somatosensory stimuli only (N=20), and a cross-modal study for which auditory and somatosensory stimuli were mixed (N=40).Results.-Early (20-150 ms) stimulus-evoked beta activity was more sensitive to ISI than temporally-overlapping gamma band activity, and this effect was seen in both auditory and somatosensory studies. In the cross-modal study, beta activity was significantly modulated by the similarity (or dissimilarity) of stimuli separated by a short ISI (0.5 s); a significant cross-modal gating effect was nevertheless detected.Conclusions.-With regard to the early sensory-evoked response recorded from the scalp, the interval between identical stimuli especially modulates beta oscillatory activity.Significance.-This is consistent with developing theories regarding the different roles of temporally-overlapping oscillatory activity within cortical neuron populations at gamma and beta frequencies, particularly the claim that the latter is related to stimulus-driven salience.

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“…Perhaps then, what has been called a P50 suppression abnormality involves not coordination between two paired stimuli, but alterations in a more basic aspect of processing sensory driving input (that is affected similarly by ketamine and schizophrenia). Interestingly, recent evidence also indicates that in healthy adults, responses to the test (second) stimulus can be altered by expectancy and attentional (topdown effects) (Clementz et al 2002). This further calls into question the idea that P50 suppression reflects a preattentive sensory gating mechanism.…”

Section: R41 Sensory and Sensorimotor Gatingmentioning

confidence: 99%

Convergence of biological and psychological perspectives on cognitive coordination in schizophrenia

Phillips¹,

Silverstein²

2003

Behav Brain Sci

380

314

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Cognitive neuroscience provides a new conceptual framework for psychiatry by showing how psychological processes arise from neuronal activity (Kandel 1998). Conversely, it is possible that psychiatry will influence the future development of cognitive neuroscience by encouraging a better balance between localist and holistic conceptions of brain function. An apparent conflict between these conceptions has been central to the development of neuroscience, with the emphasis upon locally specialized functions emerging as clearly dominant. Neuroanatomy, neurophysiology, neuropsychology, and neuroimaging all show that different regions of the brain process information about different things, and that different cells within regions deal with different aspects of those things. Recent developments in experimental and theoretical neurobiology, however, are leading to an increased emphasis upon interactions that coordinate the activity of locally specialized processors. Here we argue that impairment of these coor-BEHAVIORAL AND BRAIN SCIENCES (2003) Abstract:The concept of locally specialized functions dominates research on higher brain function and its disorders. Locally specialized functions must be complemented by processes that coordinate those functions, however, and impairment of coordinating processes may be central to some psychotic conditions. Evidence for processes that coordinate activity is provided by neurobiological and psychological studies of contextual disambiguation and dynamic grouping. Mechanisms by which this important class of cognitive functions could be achieved include those long-range connections within and between cortical regions that activate synaptic channels via NMDAreceptors, and which control gain through their voltage-dependent mode of operation. An impairment of these mechanisms is central to PCP-psychosis, and the cognitive capabilities that they could provide are impaired in some forms of schizophrenia. We conclude that impaired cognitive coordination due to reduced ion flow through NMDA-channels is involved in schizophrenia, and we suggest that it may also be involved in other disorders. This perspective suggests several ways in which further research could enhance our understanding of cognitive coordination, its neural basis, and its relevance to psychopathology.Keywords: attention; cerebral cortex; cognitive coordination; cognitive neuropsychiatry; cognitive neuropsychology; context disorganization; Gamma rhythms; Gestalt theory; glutamate; grouping; memory; NMDA-receptors; PCP-psychosis; perceptual organization; schizophrenia William A. Phillips, Ph.D., is Professor of Neuropsychology at the University of Stirling, Scotland UK. He has published more than 70 papers on vision, visual memory, perceptual learning, childrens drawings, the effects of brain damage on reading and writing, and the theory of neuronal computation. He was a founder and the first Director of the Center for Cognitive and Computational Neuroscience at the University of Stirling.Steven M. Silverstein, Ph.D., is A...

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Knowledge of Stimulus Repetition Affects the Magnitude and Spatial Distribution of Low-Frequency Event-Related Brain Potentials

Cited by 60 publications

References 33 publications

Interactions between “What” and “When” in the Auditory System: Temporal Predictability Enhances Repetition Suppression

Interactions between “What” and “When” in the Auditory System: Temporal Predictability Enhances Repetition Suppression

Gamma and beta neural activity evoked during a sensory gating paradigm: Effects of auditory, somatosensory and cross-modal stimulation

Convergence of biological and psychological perspectives on cognitive coordination in schizophrenia

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