High-quality recording of bioelectric events

Rijn, A. C. Metting van; Peper, A.; Grimbergen, C.A.

doi:10.1007/bf02441961

Cited by 410 publications

(116 citation statements)

References 10 publications

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“…com) mounted on a cap and placed on the scalp according to the International 10-20 System (FP1, FP2, AF3, AF4, F7, F3, Fz, F4, F8, FC5,FC1, FC2, FC6, CP5, CP1, Cz, CP2, CP6, P7, P3, Pz, P4, P8, T7, T8, PO3, PO4, O1, Oz, O2) plus two sites below the eyes for eye movement monitoring. Two additional electrodes placed close to Cz, the Common Mode Sense [CMS] active electrode and the Driven Right Leg [DRL] passive electrode, were used to form the feedback loop that drives the average potential of the participant as close as possible to the AD-box reference potential (Metting Van Rijn et al, 1990). Electrode impedance was kept below 5 kΩ for scalp electrodes, and below 10 kΩ for the four eye channels.…”

Section: Electroencephalograph (Eeg) Recordingsmentioning

confidence: 99%

Sex and the money – How gender stereotypes modulate economic decision-making: An ERP study

et al. 2015

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In the present event-related potential study, we investigated whether and how participants playing the ultimatum game as responders modulate their decisions according to the proposers' stereotypical identity. The proposers' identity was manipulated using occupational role nouns stereotypically marked with gender (e.g., Teacher; Engineer), paired with either feminine or masculine proper names (e.g., Anna; David). Greater FRN amplitudes reflected the early processing of the conflict between the strategic rule (i.e., earning as much money as possible) and ready-to-go responses (i.e., refusing unequal offers and discriminating proposers according to their stereotype). Responders were found to rely on a dual-process system (i.e., automatic and heuristic-based system 1 vs. cognitively costly and deliberative system 2), the P300 amplitude reflecting the switch from a decision making system to another. Greater P300 amplitudes were found in response to both fair and unfair offers and male-stereotyped proposers' offers reflecting an automatic decision making based on heuristics, while lower P300 amplitudes were found in response to 3€ offers and the female-stereotyped proposers' offers reflecting a more deliberative reasoning. Overall, the results indicate that participants were more motivated to engage in a costly deliberative reasoning associated with an increase in acceptation rate when playing with female-stereotyped proposers, who may have induced more positive and emphatic feelings in the participants than did male-stereotyped proposers. Then, we assume that people with an occupation stereotypically marked with female gender and engaged in an economic negotiation may benefit from their occupation at least in the case their counterparts lose their money if the negotiation fails.

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Section: Electroencephalograph (Eeg) Recordingsmentioning

confidence: 99%

Sex and the money – How gender stereotypes modulate economic decision-making: An ERP study

et al. 2015

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“…Generally, EMG recording amplifiers are designed as three op-amp instrumentation amplifiers with high-pass filter to remove DC electrode offset potential [7,8,9]. When recording EMG signal during stimulation with these amplifiers, the stimulation artefact saturates the amplifier.…”

Section: Introductionmentioning

confidence: 99%

A novel fully fast recovery EMG amplifier for the control of neural prosthesis

et al. 2016

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Original scientific article This paper presents a novel EMG (electromyography) fast recovery amplifier, which can be used as a neural prosthesis control interface. The basis of the proposed circuit is standard three op-amp amplifier with integrator in the negative feed-back loop of the differential amplifier. The Standard three op-amp instrumentation amplifier has been modified by introducing analog delay line between the first stage (differential input -differential output amplifier) and the second stage (differential amplifier). The main purpose of the analog delay line is to delay EMG signal and the stimulus artifact between the first and the second stage. It is shown that by introducing a delay line in the standard three op-amp instrumentation amplifier, stimulus artifact can be detected before it appears at the output of the amplifier. Thus the control circuits of the amplifier have enough time to disable the integrator in the differential amplifier, and prevent charge accumulation in the integrators capacitor. It is also shown that this configuration of the EMG amplifier has ultrafast recovery time, so it can be used as a control interface of the neural prosthesis. Keywords: analog delay line; EMG Amplifier; instrumentation amplifier; neural prosthesis Novo u potpunosti brzo oporavljivo EMG pojačalo za kontrolu neuronskih protezaIzvorni znanstveni članak Ovaj članak predstavlja novo EMG (elektromiografsko) brzo oporavljivo pojačalo, koje se može koristiti kao sučelje za kontrolu neuronskih proteza. Osnova predloženog električnog kruga je standardno instrumentacijsko pojačalo implementirano pomoću tri operacijska pojačala s integratorom u negativnoj povratnoj petlji diferencijalnog pojačala. Standardno instrumentacijsko pojačalo s tri operacijska pojačala je modificirano uvođenjem analogne linije za kašnjenje između prvog stupnja (diferencijalni ulaz -diferencijalno izlazno pojačalo) i drugog stupnja (diferencijalno pojačalo). Glavna svrha analogne linije za kašnjenje je kašnjenje EMG signala i poticaj artefakta između prvog i drugog stupnja. Uvođenjem linije za kašnjenje u standardnom instrumentacijskom pojačalu s tri operacijska pojačala, pokazano je da se poticaj artefakta može otkriti prije nego što se pojavi na izlazu iz pojačala. Na taj način kontrolni sklopovi pojačala imaju dovoljno vremena da onemoguće integrator u diferencijalnom pojačalu, i spriječe nakupljanje naboja u kondenzatoru integratora. Također je pokazano da ova konfiguracija EMG pojačala ima ultra brzo vrijeme oporavka, tako da se može koristiti kao sučelje za kontrolu neuronskih proteza. Ključne riječi: analogna linija za kašnjenje; EMG pojačalo; instrumentacijsko pojačalo; neuronske proteze

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“…͑a͒ The head box is battery powered and wireless and it can be attached to the electrode cap during the experiment. The dimensions are small ͑96ϫ 128ϫ 32 mm 3 ; weight: 374 g͒. ͑b͒ The PC interface provides basic operator functions and allows the average waveforms to be processed and monitored online.…”

Section: Figmentioning

confidence: 99%

“…Eight channels give enough spatial resolution for credible studies 1,2 and less cabling means fewer interference paths through the wiring. 3 Fast preparation is particularly important in pediatric studies or if the test subject is restless, and an enhanced signal-tonoise ratio ͑SNR͒ improves the comparability of average responses. 4,5 Greater mobility is of practical significance, particularly in field applications.…”

Section: Introductionmentioning

confidence: 99%

A compact electroencephalogram recording device with integrated audio stimulation system

Paukkunen

Kurttio

Leminen

et al. 2010

Review of Scientific Instruments

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A compact ͑96ϫ 128ϫ 32 mm 3 , 374 g͒, battery-powered, eight-channel electroencephalogram recording device with an integrated audio stimulation system and a wireless interface is presented. The recording device is capable of producing high-quality data, while the operating time is also reasonable for evoked potential studies. The effective measurement resolution is about 4 nV at 200 Hz sample rate, typical noise level is below 0.7 V rms at 0.16-70 Hz, and the estimated operating time is 1.5 h. An embedded audio decoder circuit reads and plays wave sound files stored on a memory card. The activities are controlled by an 8 bit main control unit which allows accurate timing of the stimuli. The interstimulus interval jitter measured is less than 1 ms. Wireless communication is made through bluetooth and the data recorded are transmitted to an external personal computer ͑PC͒ interface in real time. The PC interface is implemented with LABVIEW ® and in addition to data acquisition it also allows online signal processing, data storage, and control of measurement activities such as contact impedance measurement, for example. The practical application of the device is demonstrated in mismatch negativity experiment with three test subjects.

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High-quality recording of bioelectric events

Cited by 410 publications

References 10 publications

Sex and the money – How gender stereotypes modulate economic decision-making: An ERP study

Sex and the money – How gender stereotypes modulate economic decision-making: An ERP study

A novel fully fast recovery EMG amplifier for the control of neural prosthesis

A compact electroencephalogram recording device with integrated audio stimulation system

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