The Experts below are selected from a list of 6951 Experts worldwide ranked by ideXlab platform
Ewout Meijer - One of the best experts on this subject based on the ideXlab platform.
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memory detection with the concealed information test a meta analysis of Skin Conductance respiration heart rate and p300 data
Psychophysiology, 2014Co-Authors: Ewout Meijer, Lotem Elber, Nathalie Klein Selle, Gershon BenshakharAbstract:The Concealed Information Test (CIT) uses psychophysiological measures to determine the presence or absence of crime-related information in a suspect’s memory. We conducted a meta-analysis on the validity of the CIT based on four physiological measures—Skin Conductance Response (SCR), respiration line length (RLL), changes in heart rate (HR), and enhanced amplitudes of the P300 component of the event-related potential (P300). This meta-analysis relied on laboratory studies that used either the mock-crime or the personal-item paradigm. Results showed a mean effect size (d*) of 1.55 for SCR, 1.11 for RLL, 0.89 for HR, and 1.89 for P300. However, P300 outperformed SCR only in the personal-item paradigm, but not in the mock-crime paradigm. Motivation level, number of questions, publication year, and the inclusion of innocent participants emerged as significant moderators for the SCR, while only the type of paradigm used moderated the P300 effect. Descriptors: Concealed Information Test (CIT), Guilty Knowledge Test (GKT), Skin Conductance Response (SCR), heart rate deceleration, respiration line length (RLL), event-related potential (ERP), P300, meta-analysis
Bach, Dominik R - One of the best experts on this subject based on the ideXlab platform.
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PsPM-SCRV1: Skin Conductance Responses to aversive/neutral pictures at different inter trial intervals.
2018Co-Authors: Bach, Dominik R, Flandin Guillaume, Friston, Karl J., Dolan, Raymond J.Abstract:This dataset includes Skin Conductance Response (SCR) measurement, keypress Responses and keypress Response times to stimuli drawn from the International Affective Picture System for each of 24 healthy unmedicated participants (12 males and 12 females aged 27+/-4.6 years). The experiment used a 2x3 factorial design with the factors picture type (aversive, neutral), and mean ISI (3s, 9s, and 19s).
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PsPM-SCRV3: Skin Conductance Responses to loud sounds and aversive/neutral pictures.
2018Co-Authors: Bach, Dominik R, Flandin Guillaume, Friston, Karl J., Dolan, Raymond J.Abstract:This dataset includes Skin Conductance Response (SCR) measurements, keypress Responses and keypress Response times to acoustic and visual stimuli for each of 22 healthy unmedicated participants (11 males and 11 females aged 22+/-4.8 years. The auditory stimuli are 1s long white noise bursts at 95dB presented over headphones. Visual stimuli are aversive pictures drawn from the International Affective Picture System. ITI are selected randomly on each trial from 29s, 34s or 39s.
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PsPM-SCRV2: Skin Conductance Responses to loud sounds at different inter trial intervals.
2018Co-Authors: Bach, Dominik R, Flandin Guillaume, Friston, Karl J., Dolan, Raymond J.Abstract:This dataset includes Skin Conductance Response (SCR) measurements, keypress Responses and keypress Response times to acoustic stimuli for each of 24 healthy unmedicated participants (12 males and 12 females aged 24+/-4.6 years, identical sample as in SCRV_1). The stimuli are 1s long white noise bursts at 95dB presented over headphones. Mean ISI is varied in a block-wise fashion (3s, 9s, 19s). The experiment follows a single factorial design with three levels of the mean ISI.
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PsPM-SCRV5: Skin Conductance Responses to auditory oddballs
2018Co-Authors: Bach, Dominik R, Flandin Guillaume, Friston, Karl J., Dolan, Raymond J.Abstract:This dataset includes Skin Conductance Response (SCR) measurements, keypress Responses and keypress Response times for each of 20 healthy unmedicated participants (10 males and 10 females aged 21.8+/-3.3 years) participating in an auditory oddball task with 10 oddballs. The stimuli are delivered every second via headphones as one of two sine tones (50ms length; 10ms ramp; ~75dB; 440 or 660 Hz). Subjects are instructed to press a computer key on hearing the oddball. Oddball tone is balanced across participants. ITI is selected randomly on each trial from 29s, 34s or 39s.
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PsPM-SCRV4: Skin Conductance Responses in fear conditioning with visual CS and auditory US
2018Co-Authors: Bach, Dominik R, Friston, Karl J., Daunizeau Jean, Dolan, Raymond J.Abstract:This dataset includes Skin Conductance Response (SCR) measurements, CS and US information, keypress Responses and keypress Response times for each of 32 healthy unmedicated participants (16 males and 16 females aged 22.4+/-4.5 years) participating in a classical (Pavlovian) discriminant delay fear conditioning task. CS is a visual stimulus with variation in position on screen and color. Us is a 1s long white noise burst at 95dB presented over headphones. SOA between the CS and US is varied between participants to be 4, 10, or 16 s. The ITI is selected randomly on each trial from 14, 19, or 23 s
Gershon Benshakhar - One of the best experts on this subject based on the ideXlab platform.
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memory detection with the concealed information test a meta analysis of Skin Conductance respiration heart rate and p300 data
Psychophysiology, 2014Co-Authors: Ewout Meijer, Lotem Elber, Nathalie Klein Selle, Gershon BenshakharAbstract:The Concealed Information Test (CIT) uses psychophysiological measures to determine the presence or absence of crime-related information in a suspect’s memory. We conducted a meta-analysis on the validity of the CIT based on four physiological measures—Skin Conductance Response (SCR), respiration line length (RLL), changes in heart rate (HR), and enhanced amplitudes of the P300 component of the event-related potential (P300). This meta-analysis relied on laboratory studies that used either the mock-crime or the personal-item paradigm. Results showed a mean effect size (d*) of 1.55 for SCR, 1.11 for RLL, 0.89 for HR, and 1.89 for P300. However, P300 outperformed SCR only in the personal-item paradigm, but not in the mock-crime paradigm. Motivation level, number of questions, publication year, and the inclusion of innocent participants emerged as significant moderators for the SCR, while only the type of paradigm used moderated the P300 effect. Descriptors: Concealed Information Test (CIT), Guilty Knowledge Test (GKT), Skin Conductance Response (SCR), heart rate deceleration, respiration line length (RLL), event-related potential (ERP), P300, meta-analysis
Merel Kindt - One of the best experts on this subject based on the ideXlab platform.
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fear conditioning of scr but not the startle reflex requires conscious discrimination of threat and safety
Frontiers in Behavioral Neuroscience, 2014Co-Authors: Dieuwke Sevenster, Tom Beckers, Merel KindtAbstract:There is conflicting evidence as to whether awareness is required for conditioning of the Skin Conductance Response (SCR). Recently, Schultz and Helmstetter (2010) reported SCR conditioning in contingency unaware participants by using difficult to discriminate stimuli. These findings are in stark contrast with other observations in human fear conditioning research, showing that SCR predominantly reflects contingency learning. Therefore, we repeated the study by Schultz and Helmstetter and additionally measured conditioning of the startle Response, which seems to be less sensitive to declarative knowledge than SCR. While we solely observed SCR conditioning in participants who reported awareness of the contingencies (n = 16) and not in the unaware participants (n = 18), we observed startle conditioning irrespective of awareness. We conclude that SCR but not startle conditioning depends on conscious discriminative fear learning.
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psychophysiological Response patterns to affective film stimuli
PLOS ONE, 2013Co-Authors: Marieke G N Bos, Tom Beckers, Pia Jentgens, Merel KindtAbstract:Psychophysiological research on emotion utilizes various physiological Response measures to index activation of the defense system. Here we tested 1) whether acoustic startle reflex (ASR), Skin Conductance Response (SCR) and heart rate (HR) elicited by highly arousing stimuli specifically reflect a defensive state and 2) the relation between resting heart rate variability (HRV) and affective responding. In a within-subject design, participants viewed film clips with a positive, negative and neutral content. In contrast to SCR and HR, we show that ASR differentiated between negative, neutral and positive states and can therefore be considered as a reliable index of activation of the defense system. Furthermore, resting HRV was associated with affect-modulated characteristics of ASR, but not with SCR or HR. Interestingly, individuals with low-HRV showed less differentiation in ASR between affective states. We discuss the important value of ASR in psychophysiological research on emotion and speculate on HRV as a potential biological marker for demarcating adaptive from maladaptive responding.
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reconsolidation in a human fear conditioning study a test of extinction as updating mechanism
Biological Psychology, 2013Co-Authors: Merel Kindt, Marieke SoeterAbstract:Disrupting reconsolidation seems to be a promising approach to dampen the expression of fear memory. Recently, we demonstrated that disrupting reconsolidation by a pharmacological manipulation specifically targeted the emotional expression of memory (i.e., startle Response). Here we test in a human differential fear-conditioning paradigm with fear-relevant stimuli whether the spacing of a single unreinforced retrieval trial relative to extinction learning allows for "rewriting" the original fear association, thereby preventing the return of fear. In contrast to previous findings reported by Schiller et al. (2010), who used a single-method for indexing fear (Skin Conductance Response) and fear-irrelevant stimuli, we found that extinction learning within the reconsolidation window did not prevent the recovery of fear on multiple indices of conditioned responding (startle Response, Skin Conductance Response and US-expectancy). These conflicting results ask for further critical testing given the potential impact on the field of emotional memory and its application to clinical practice.
Gershon Ben-shakhar - One of the best experts on this subject based on the ideXlab platform.
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Memory detection with the Concealed Information Test: a meta analysis of Skin Conductance, respiration, heart rate, and P300 data.
Psychophysiology, 2014Co-Authors: Ewout H. Meijer, Lotem Elber, Nathalie Klein Selle, Gershon Ben-shakharAbstract:The Concealed Information Test (CIT) uses psychophysiological measures to determine the presence or absence of crime-related information in a suspect's memory. We conducted a meta-analysis on the validity of the CIT based on four physiological measures-Skin Conductance Response (SCR), respiration line length (RLL), changes in heart rate (HR), and enhanced amplitudes of the P300 component of the event-related potential (P300). This meta-analysis relied on laboratory studies that used either the mock-crime or the personal-item paradigm. Results showed a mean effect size (d*) of 1.55 for SCR, 1.11 for RLL, 0.89 for HR, and 1.89 for P300. However, P300 outperformed SCR only in the personal-item paradigm, but not in the mock-crime paradigm. Motivation level, number of questions, publication year, and the inclusion of innocent participants emerged as significant moderators for the SCR, while only the type of paradigm used moderated the P300 effect.
