Habituation of Somatosensory Event-Related Potentials in Subthreshold Rhythmic (1 Hz) Electrocutaneous Stimulation of the Arm during the Slow-Wave Stage of Daytime Sleep

2018 ◽  
Vol 48 (8) ◽  
pp. 978-982
Author(s):  
V. B. Dorokhov ◽  
Yu. V. Ukraintseva ◽  
G. N. Arsen’ev ◽  
A. Yu. Mironov ◽  
I. P. Trapeznikov ◽  
...  
Keyword(s):  
Slow Wave ◽  
Event Related Potentials ◽  
Electrocutaneous Stimulation ◽  
Daytime Sleep ◽  
Related Potentials ◽  
Stimulation Of

Face and Word Recognition in Patients with Left and Right Hemispheric Lesions: Evidence from Reaction Times and ERPs

2002 ◽  
Vol 13 (1) ◽  
pp. 69-83 ◽  
Author(s):  
Stefan R. Schweinberger ◽  
Thomas Klos ◽  
Werner Sommer
Keyword(s):  
Slow Wave ◽  
Reaction Times ◽  
Memory Search ◽  
Event Related Potentials ◽  
Performance Deficits ◽  
Set Size ◽  
Left Brain ◽  
Related Potentials ◽  
Abstract Words ◽  
Left Brain Damage

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.

scholarly journals Characterizing pinprick-evoked brain potentials before and after experimentally induced secondary hyperalgesia

2015 ◽  
Vol 114 (5) ◽  
pp. 2672-2681 ◽  
Author(s):  
Emanuel N. van den Broeke ◽  
André Mouraux ◽  
Antonia H. Groneberg ◽  
Doreen B. Pfau ◽  
Rolf-Detlef Treede ◽  
...  
Keyword(s):  
Event Related Potentials ◽  
Stimulus Onset ◽  
Secondary Hyperalgesia ◽  
Brain Potentials ◽  
Nociceptive Pathways ◽  
Before And After ◽  
Pain Ratings ◽  
Related Potentials ◽  
Positive Complex ◽  
Stimulation Of

Secondary hyperalgesia is believed to be a key feature of “central sensitization” and is characterized by enhanced pain to mechanical nociceptive stimuli. The aim of the present study was to characterize, using EEG, the effects of pinprick stimulation intensity on the magnitude of pinprick-elicited brain potentials [event-related potentials (ERPs)] before and after secondary hyperalgesia induced by intradermal capsaicin in humans. Pinprick-elicited ERPs and pinprick-evoked pain ratings were recorded in 19 healthy volunteers, with mechanical pinprick stimuli of varying intensities (0.25-mm probe applied with a force extending between 16 and 512 mN). The recordings were performed before (T0) and 30 min after (T1) intradermal capsaicin injection. The contralateral noninjected arm served as control. ERPs elicited by stimulation of untreated skin were characterized by 1) an early-latency negative-positive complex peaking between 120 and 250 ms after stimulus onset (N120-P240) and maximal at the vertex and 2) a long-lasting positive wave peaking 400–600 ms after stimulus onset and maximal more posterior (P500), which was correlated to perceived pinprick pain. After capsaicin injection, pinprick stimuli were perceived as more intense in the area of secondary hyperalgesia and this effect was stronger for lower compared with higher stimulus intensities. In addition, there was an enhancement of the P500 elicited by stimuli of intermediate intensity, which was significant for 64 mN. The other components of the ERPs were unaffected by capsaicin. Our results suggest that the increase in P500 magnitude after capsaicin is mediated by facilitated mechanical nociceptive pathways.

scholarly journals An Investigation of a Frontal Negative Slow Wave in a Virtual Hedonic Purchase Task

2021 ◽  
Vol 15 ◽  
Author(s):  
Yupeng Mei ◽  
Kunpeng Jing ◽  
Lele Chen ◽  
Rui Shi ◽  
Zhijie Song
Keyword(s):  
Slow Wave ◽  
Event Related Potentials ◽  
Neural Substrates ◽  
Sales Promotion ◽  
Price Promotion ◽  
Hedonic Consumption ◽  
Charitable Donation ◽  
Related Potentials

There is a connection between the frontal negative slow wave (FNSW) and the arousal inhibition in the hedonic purchase context. To calculate the FNSW (400–800 ms), event-related potentials (ERPs) method was applied to depict the neural substrates on prudent and impulsive consumers’ behaviors within various states of promotion. Promotion types include the pure price promotion and the mixed promotion (a mixture of a charitable donation and a discount). Behaviorally, consumers response more quickly in the pure price promotion condition and they express a preference for the mixed promotion. More importantly, a larger FNSW emerged in the impulsive consumers than the prudent, suggesting that the former might tend to control their eagerness to consume hedonic items. Compared with the price promotion as the worse option, the mixed promotion as the better option caused more perceptual conflict, leading to an increase in N2 amplitude. It suggests that consumers incline to reject the worse offers. These results also reveal that people primarily have to search negative promotion information by their insight and subsequently impulsive consumers inhibit the responses to the promotion information. The method of ERPs and FNSW should be helpful for marketing researchers and professionals on hedonic consumption and sales promotion.

scholarly journals High-density EEG of auditory steady-state responses during stimulation of basal forebrain parvalbumin neurons

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Eunjin Hwang ◽  
Hio-Been Han ◽  
Jung Young Kim ◽  
Jee Hyun Choi
Keyword(s):  
Steady State ◽  
Basal Forebrain ◽  
Event Related Potentials ◽  
High Density ◽  
Time Stamps ◽  
Related Potentials ◽  
Steady State Responses ◽  
Auditory Steady State Responses ◽  
State Responses ◽  
Stimulation Of

Abstract We present high-density EEG datasets of auditory steady-state responses (ASSRs) recorded from the cortex of freely moving mice with or without optogenetic stimulation of basal forebrain parvalbumin (BF-PV) neurons, known as a subcortical hub circuit for the global workspace. The dataset of ASSRs without BF-PV stimulation (dataset 1) contains raw 36-channel EEG epochs of ASSRs elicited by 10, 20, 30, 40, and 50 Hz click trains and time stamps of stimulations. The dataset of ASSRs with BF-PV stimulation (dataset 2) contains raw 36-channel EEG epochs of 40-Hz ASSRs during BF-PV stimulation with latencies of 0, 6.25, 12.5, and 18.75 ms and time stamps of stimulations. We provide the datasets and step-by-step tutorial analysis scripts written in Python, allowing for descriptions of the event-related potentials, spectrograms, and the topography of power. We complement this experimental dataset with simulation results using a time-dependent perturbation on coupled oscillators. This publicly available dataset will be beneficial to the experimental and computational neuroscientists.

Abnormalities in Event-Related Potentials, N100, P200, P300 and Slow Wave in Schizophrenia

1991 ◽  
Vol 45 (1) ◽  
pp. 57-65 ◽  
Author(s):  
Chikara Ogura ◽  
Yasuhiro Nageishi ◽  
Minora Matsubayashi ◽  
Fumiaki Omura ◽  
Akira Kishimoto ◽  
...  
Keyword(s):  
Slow Wave ◽  
Event Related Potentials ◽  
Related Potentials

P3B and Positive Slow Wave following Real and Dummy Feedback on Arithmetic Rule-Learning and Perceptuomotor Tasks

1997 ◽  
Vol 84 (1) ◽  
pp. 195-216
Author(s):  
Bruce E. McDonough ◽  
Charles A. Warren
Keyword(s):  
Slow Wave ◽  
Green Light ◽  
Rule Learning ◽  
Event Related Potentials ◽  
Learning Task ◽  
Feedback Information ◽  
Feedback Display ◽  
Related Potentials ◽  
Numeric Information

Event-related Potentials (ERPs) were recorded to feedback during a cognitively demanding, arithmetic rule-learning task and a relatively simple, skill-oriented, perceptuomotor task. For both tasks, a compound feedback display was employed. It consisted of numeric feedback information presented simultaneously with a red or green light (50% each) which indicated whether the numeric information was real (valid) or dummy (invalid). The task and feedback-validity manipulations showed a functional dissociation between the P3b (350–450 msec.) and a Positive Slow Wave (600–900 msec.). P3b was larger for real than for dummy feedback; Positive Slow Wave was larger for rule-learning than for perceptuomotor tasks.

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