Simulation Analysis of Interaction in O-Type Devices with CRL Type Slow-Wave Structures

Abstract: We recorded reaction times (RTs) and event-related potentials (ERPs) in patients with unilateral lesions during a memory search task. Participants memorized faces or abstract words, which were then recognized among new ones. The RT deficit found in patients with left brain damage (LBD) for words increased with memory set size, suggesting that their problem relates to memory search. In contrast, the RT deficit found in patients with RBD for faces was apparently related to perceptual encoding, a conclusion also supported by their reduced P100 ERP component. A late slow wave (720-1720 ms) was enhanced in patients, particularly to words in patients with LBD, and to faces in patients with RBD. Thus, the slow wave was largest in the conditions with most pronounced performance deficits, suggesting that it reflects deficit-related resource recruitment.

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Slow Wave Activity Related to Working Memory Maintenance in the N-Back Task

Journal of Psychophysiology ◽

10.1027/0269-8803/a000164 ◽

2016 ◽

Vol 30 (4) ◽

pp. 141-154 ◽

Cited By ~ 7

Author(s):

Kira Bailey ◽

Gregory Mlynarczyk ◽

Robert West

Keyword(s):

Working Memory ◽

Slow Wave ◽

Time Course ◽

Relevant Information ◽

Wave Activity ◽

Slow Wave Activity ◽

Response Accuracy ◽

Functional Neuroanatomy ◽

Stimulus Interval ◽

Back Task

Abstract. Working memory supports our ability to maintain goal-relevant information that guides cognition in the face of distraction or competing tasks. The N-back task has been widely used in cognitive neuroscience to examine the functional neuroanatomy of working memory. Fewer studies have capitalized on the temporal resolution of event-related brain potentials (ERPs) to examine the time course of neural activity in the N-back task. The primary goal of the current study was to characterize slow wave activity observed in the response-to-stimulus interval in the N-back task that may be related to maintenance of information between trials in the task. In three experiments, we examined the effects of N-back load, interference, and response accuracy on the amplitude of the P3b following stimulus onset and slow wave activity elicited in the response-to-stimulus interval. Consistent with previous research, the amplitude of the P3b decreased as N-back load increased. Slow wave activity over the frontal and posterior regions of the scalp was sensitive to N-back load and was insensitive to interference or response accuracy. Together these findings lead to the suggestion that slow wave activity observed in the response-to-stimulus interval is related to the maintenance of information between trials in the 1-back task.

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Is a frontal positive slow wave in the ERP specific for emotion-focused processing?

PsycEXTRA Dataset ◽

10.1037/e526132012-217 ◽

1996 ◽

Author(s):

Stefanie Maier ◽

Oliver Diedrich ◽

Gabriele Becker ◽

Ewald Naumann ◽

Dieter Bartussek

Keyword(s):

Slow Wave ◽

Focused Processing

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Optimizing Overall equipment effectiveness through simulation analysis

PsycEXTRA Dataset ◽

10.1037/e582772013-006 ◽

2012 ◽

Author(s):

Anand S. Relkar ◽

K. N. Nandurkar

Keyword(s):

Simulation Analysis

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Experience-dependent regulation of synchronized slow-wave sleep in visual cortex

Neuroscience Research ◽

10.1016/s0168-0102(00)81874-x ◽

2000 ◽

Vol 38 ◽

pp. S171

Author(s):

H Miyamoto

Keyword(s):

Visual Cortex ◽

Slow Wave ◽

Slow Wave Sleep

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Computer simulation study about the dependence of amorphous silicon photonic waveguides efficiency on the material quality

The European Physical Journal Applied Physics ◽

10.1051/epjap/2020190250 ◽

2020 ◽

Vol 90 (3) ◽

pp. 30502

Author(s):

Alessandro Fantoni ◽

João Costa ◽

Paulo Lourenço ◽

Manuela Vieira

Keyword(s):

Amorphous Silicon ◽

High Throughput Screening ◽

Simulation Analysis ◽

Low Cost ◽

Deposition Process ◽

Large Area ◽

Sidewall Roughness ◽

Sensing Applications ◽

Fabrication Defects ◽

The Impact

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.

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Therapieschwierige Epilepsien am Beispiel der Rasmussen-Enzephalitis

Kinder- und Jugendmedizin ◽

10.1055/s-0038-1629311 ◽

2012 ◽

Vol 12 (06) ◽

pp. 368-370

Author(s):

A. Merkenschlager ◽

I. Sorge ◽

A. Bertsche ◽

M. K. Bernhard ◽

F. Wegmann

Keyword(s):

Slow Wave ◽

Psychische Belastung ◽

Sich Eine ◽

Neurologische Defizite

Zusammenfassung Einleitung: Bis zu einem Drittel der Epilepsiepatienten leidet unter einer therapieschwierigen Epilepsie. Dies bedeutet eine erhebliche Belastung im Alltag, zudem können neurologische Defizite resultieren. Wieso die Patienten nicht auf die vorhandenen Therapieoptionen ansprechen, ist noch weitestgehend unklar. Die Rasmussen-Enzephalitis (RE) ist ein Beispiel für eine therapieschwierige Epilepsie. Fallbericht: Nach unauffälliger motorischer und sprachlicher Entwicklung traten im Alter von 6 Jahren bei dem Mädchen das erste Mal fokale und komplex-fokale Krampfanfälle auf. Auch unter antikonvulsiver Polytherapie konnte eine Anfallsfreiheit nicht erreicht werden. Zudem entwickelte sich eine über viele Jahre progrediente Hemiatrophia cerebri, und es zeigten sich einseitig betonte epilepsietypische EEG-Muster mit Verlangsamungen und sharp-slow-wave-Komplexen. In Zusammenschau dieser Befunde konnte die Diagnose einer Rasmussen-Enzephalitis gestellt werden. Repetitive Stoßtherapien mit Methylprednisolon und Immunglobulinen brachten kurzfristig eine Linderung der Krampfsituation, die neurologischen Defizite und die daraus resultierende enorme psychische Belastung waren jedoch progredient. Diskussion: Am ehesten wird von einer autoimmunen Reaktion als Ursache der Rasmussen Enzephalitis ausgegangen. Ein optimales medikamentöses Therapieschema dieser Epilepsie gibt es bis heute nicht. Eine frühzeitige Diagnosestellung und sofortiger Therapiebeginn lassen die Krankheit jedoch meist langsamer und weniger schwerwiegend voranschreiten. Einzig die Hemisphärektomie bringt in bis zu 85 % der Fälle eine Anfallsfreiheit. Die damit einhergehende spastische Hemiparese, Hemianopsie sowie Sprachstörungen lassen die Entscheidung zur Operation jedoch schwer fallen. Gemeinsam mit dem Patienten und seiner Familie muss eine sorgfältige Risiko-NutzenAbwägung erfolgen.

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