Time-resolved neuroimaging of visual short term memory consolidation by post-perceptual attention shifts

Hecht, Marcus; Thiemann, Ulf; Freitag, Christine M.; Bender, Stephan

doi:10.1016/j.neuroimage.2015.11.013

Cited by 13 publications

(6 citation statements)

References 81 publications

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“…While we do not yet have a sound neurophysiological explanation on how tACS affected this ERP component, this possible effect clearly warrants further investigation for several reasons. First, previous studies found a relationship between the amplitude of the late negative ERP component N700 and the amount of attention allocated to stimuli ( 124 – 126 ). And second, there is evidence that the N700 amplitude is correlated with a dopamine transporter allele ( 127 ) which is considered as a risk factor for ADHD.…”

Section: Discussionmentioning

confidence: 99%

P300 Modulation via Transcranial Alternating Current Stimulation in Adult Attention-Deficit/Hyperactivity Disorder: A Crossover Study

et al. 2022

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ObjectiveA repeated finding regarding event-related potentials (ERPs) is that patients with ADHD show a reduced P300 amplitude. This raises the question of whether the attention of ADHD patients can be increased by stabilizing the P300. Assuming that the P300 is generated by event-related oscillations (EROs) in the low frequency range (0–8 Hz), one approach to increase the P300 could be to stimulate the patient’s P300 underlying ERO by means of transcranial alternating current stimulation (tACS). The aim of this follow-up study was to investigate this hypothesized mechanism of action in adult ADHD patients.Materials and MethodsUndergoing a crossover design, 20 adult ADHD patients (10 female) received an actual stimulation via tACS on one day and a sham stimulation on another day. Before and after each intervention, EEG characteristics (P300 amplitudes, low frequency power) and attention performances (d2 attention test, visual oddball task (VOT)) were recorded.ResultsElectrophysiological analyses revealed no evidence for an enhanced P300 amplitude or low frequency power increase after actual stimulation compared to sham stimulation. Instead, a significant effect was found for a stronger N700 amplitude increase after actual stimulation compared to sham stimulation. Consistent with the P300 null results, none of the examined neuropsychological performance measures indicated a tACS-induced improvement in attentional ability.ConclusionContrary to a previous study using tACS to modulate the P300 in adult ADHD patients, the current study yields no evidence that tACS can increase the P300 amplitude in adult ADHD patients and that such P300 enhancement can directly improve neuropsychological parameters of attention.

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Section: Discussionmentioning

confidence: 99%

P300 Modulation via Transcranial Alternating Current Stimulation in Adult Attention-Deficit/Hyperactivity Disorder: A Crossover Study

et al. 2022

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“…Besides small frontal negativity, young children showed enhanced processing of the directional warning cue over posterior-temporal and occipital areas related to visual cortices (Bender et al, 2010; Hecht et al, 2016) that caused a partial masking of small SMA activity in the ERP analysis. Van Leeuwen et al (1998) observed similar early topographies and found posterior sources for this so called CNV/P3 complex.…”

Section: Discussionmentioning

confidence: 99%

Mapping Motor Preparation in the Developing Brain: Insights from Contingent Negative Variation and Event-related Mu Rhythm Modulation

Schmidgen,

Heinen,

Konrad

et al. 2024

Preprint

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Introduction: The motor system shows a pronounced development throughout childhood and adolescence. The analysis of the contingent negative variation (CNV) provides valuable insights into various cognitive and motor processes, underlying cortical sources, and their development across the lifespan. Methods: We investigated the maturation of motor preparation, pre-activation, and post-processing in children and adolescents aged 5- to 16- years. EEG Data of 46 healthy right-handed subjects were recorded, using a 64-electrode high-density sensor array. Subjects performed a CNV task with a directional warning cue. To assess age-related developmental differences of cortical activation, analyses of event-related potentials (ERPs), mu-rhythm (de)synchronization, and source analysis were applied. Results: Children showed increased reaction times and committed more errors than adolescent subjects. Motor preparation and post-processing were characterized by a developmental increase of cortical activity related to the supplementary motor area (SMA). Young children showed a pronounced sensory post-processing during orienting response (early CNV) that decreased with age. In contrast to previous research in young adults, adolescent subjects showed no contralateral activation of motor areas during motor preparation (late CNV) yet. Furthermore, there was an observed decline in motor post processing with maturation. Conclusion: The results indicate a prolonged maturation of cortical scalp areas associated with motor control up into late adolescence or early adulthood. With age, the activation of mid-frontocentral regions associated with the SMA becomes more pronounced during motor planning and response evaluation. Qualitatively distinct cortical activation patterns of young subjects suggest immature supplementary-, pre-, and primary motor areas and might be a primary cause for age-related increasing efficiency of motor action control.

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“…Как и в нашем предыдущем исследовании [14], был выявлен выраженный поздний отрицательный компонент, начинающий формироваться в центральных и теменных отведениях во время категоризации существительных (спустя примерно 700 мс). Эти данные согласуются с имеющимися сведениями о компоненте N700, который связан с дополнительным функционированием внимания и памяти после сознательного распознавания стимула и демонстрирует рост амплитуды, когда стимул привлекает внимание или когда он запоминается, и, наоборот, ее уменьшение при пассивном восприятии стимулов [11][12][13]. Представленное исследование рассматривало также обработку первого слова в согласованном словосочетании в целевом и нецелевом условии, но не выявило формирования поздней негативной волны во время категоризации определений по сравнению с их пассивным прочтением.…”

Section: Discussionunclassified

“…Помимо изучения лексико-семантических коррелят обработки вербальной информации интерес также представляет анализ наиболее поздних изменений электрической активности, возникающих через 700 мс после предъявления стимула (компонент N700) и рассматриваемых как отражение активации внимания и памяти после сознательного распознавания стимулов [11][12][13]. В предыдущем исследовании [14] мы обнаружили, что компонент чувствителен к изменению поведенческой задачи и формируется во время обработки мозгом целевых для категоризации слов.…”

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Visual-Verbal Information Processing During Passive Reading and Categorization of Words in a Phrase

Nuzhina,

Prodius,

Mukhina

2024

Journal of MBR

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The purpose of this study was to identify neurophysiological differences in information processing by the brain during passive reading and semantic categorization of individual words within a phrase. Materials and methods. The research involved 25 natural science students of Nizhny Novgorod universities. In the course of the experiment, the subjects were presented with word combinations consisting of an attribute and a noun on a computer monitor. In the first series of presentations, the task was to classify the attribute (target condition) and read the noun (non-target condition), in the second, to classify the noun and read the attribute. This allowed us to assess the restructuring of information processing when changing the task within a phrase, as well as to compare the processing of the word in the first and second positions in the target and non-target conditions. Using the 21-channel Neuron-Spectrum-4/VPM electroencephalograph (Neurosoft, Russia), event-related potentials (ERPs) obtained during the response to presented stimuli were recorded. Results. No differences were observed in attribute processing between the target and non-target conditions when tasks changed. For nouns, differences were revealed in ERP components between the target and non-target conditions. There was a more pronounced peak of the P200 component, a less pronounced peak of the N400 and a late negative wave of the N700 component during the categorization of nouns compared to their passive reading. Thus, when performing different tasks within a phrase, the brain changes the nature of verbal information processing, which is manifested in strengthening early lexical access, followed by the facilitation of lexico-semantic processing and activation of cognitive control mechanisms at the latest stages during the categorization of the second word in a phrase (noun) compared to its passive reading.

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Time-resolved neuroimaging of visual short term memory consolidation by post-perceptual attention shifts

Cited by 13 publications

References 81 publications

P300 Modulation via Transcranial Alternating Current Stimulation in Adult Attention-Deficit/Hyperactivity Disorder: A Crossover Study

P300 Modulation via Transcranial Alternating Current Stimulation in Adult Attention-Deficit/Hyperactivity Disorder: A Crossover Study

Mapping Motor Preparation in the Developing Brain: Insights from Contingent Negative Variation and Event-related Mu Rhythm Modulation

Visual-Verbal Information Processing During Passive Reading and Categorization of Words in a Phrase

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