Bonillo Martín, Albert

Corrales, Montserrat

Ivanova, Anastasya

Martínez Membrives, Esther

Molinuevo Alonso, Beatriz

Monguillot Alonso, Marina

Ramos Quiroga, Josep Antoni

Torrents Rodas, David

Torrúbia, Rafael

Universitat Autònoma de Barcelona. Core Salut Mental

Ivanova Serokhvostova, Anastasya

Ramos-Quiroga, Josep Antoni

Diposit Digital de Documents de la UAB

THE STUDY OF CHILDREN'S FEAR IN THE LAB: AN ANALYSIS OF A MODIFIED VERSION OF A FEAR CONDITIONING PARADIGM DEVELOPED BY NEUMANN ET AL (2008)Anastasiya Ivanova1,2, David Torrents-Rodas1,2, Beatriz Molinuevo1,2, Marina Monguillot1,2, Montserrat Corrales3, Albert Bonillo4, Esther Martínez-Membrives 1,2, Josep A. Ramos-Quiroga 1,3 and Rafael Torrubia 1,21 Dept. Psiquiatria i Medicina Legal. UAB; 2 Institut de Neurociències. UAB; 3 Servei de Psiquiatria Vall d’Hebron i Vall d’Hebron Institut de Recerca 4Departament de Psicobiologia i de Metodologia de les Ciències de la Salut. UAB.Anastasya.Ivanova@uab.catFear conditioning is a form of associative learning by which a neutral stimulus becomes aconditioned stimulus (CS) that elicits a fear response after being paired with an innately aversivestimulus (unconditioned stimulus, US). Fear conditioning has been widely studied as a source ofindividual differences in the pathogenesis of both anxiety disorders and psychopathy,nevertheless, research using children samples has been scarce. The study of fear conditioning inchildren can be helpful to explain the development of individual differences in fear and anxiety.INTRODUCTION[1] Neumann, D. L., Waters, A. M., Westbury, H. R. & Henry, J. (2008). The use of an unpleasant sound unconditional stimulus in an aversive conditioning procedure with 8- to 11- year-old children. Biological Psychology, 79(3), 337-342.REFERENCESAIMTo implement in a clinicalchildren’s sample a modifiedversion of a differential fearconditioning paradigm forchildren developed byNeumann, et al. (2008).METHODACKNOWLEDGMENTS: This research was supported by the Ministerio de Economía, Industria y Competitividad, Spanish government, (PSI2015-67441-R) and by the AGAUR, Generalitat de Catalunya (2017 SGR1586). A.I. is recipient of a Ph.D. fellowship by the Generalitat de Catalunya (FI2017).PARTICIPANTS• 15 male volunteers (M=9.87years old; SD=1.96) recruitedfrom the Psychiatry Service atVall d’Hebron Hospital.• Inclusion criteria: a) ages 5-12 years old; b) IQ ≥ 70; and c)reading comprehension of theSpanish language.RESULTSCONCLUSIONSThe results suggest that the paradigm is a useful procedure to study fear learning processes in children.CONDITIONING PARADIGMThe modified Neumann et al., (2008) taskconsisted of three phases:• Pre-acquisition Trials (N=4): onlygeometric shapes as conditioned stimuli(CS+ and CS-) were presented.• Acquisition Trials (N=16): CS+ and CS-were presented. CS+ was always followedby the US (an unpleasant sound of metalscraping on slate of 83 dB). No stimulusfollowed the CS-.• Post-acquisition Trials (N=16): only CS+and CS- were presented.Changes in skin conductance responses(SCR) and online risk ratings for US wereused as measures of fear conditioning.012Pre-acquisitionrisk ratingsB1 B1 B2 B3 B4Acquisition riskratingsCS+ CS-B1 B2 B3 B4Post-acquisitionrisk ratings00,10,20,3µSPre-acquisitionSCRB1 B2 B3 B4AcquisitionSCRCS+ CS-B1 B2 B3 B4Post-acquisition SCRB1During pre-acquisition, no significant differences in responses to CS+ and CS- were found neither for SCR (F1;14=0.00; n.s.) norfor risk ratings for US (F1;14= 0.09; n.s.). In acquisition phase, participants showed differential conditioning indicated by greaterSCR (F1;14= 9.08; p < .01) and greater risk ratings (F1;14= 33.18; p < .001) to the CS+ than to the CS-. In post-acquisition phase,extinction was observed, as SCR (F1;14= 0.78; n.s.) and risk ratings (F1;14= 1.04; n.s.) to CS+ were not significantly different fromthose to CS-.USCS+RiskratingsLatencywindowSCR8s2,5s1-4s8sSCHEMATIC DIAGRAMDATA RECORDING: SCR was recorded from the distal phalanges of the index and themiddle left-hand fingers by means of two Ag/AgCl electrodes filled with electrolyte. TheGSR100C module (Biopac Systems) was used to provide a constant voltage of 0.5Vand to amplify the recorded signal. The signal was sampled at a rate of 125 Hz.SCR magnitudes in microsiemens (µS) were computed as the difference between themaximum SCR value occurring 1–4s after CS onset and the previous minimum valueduring latency window. Trials <0.05 µS were scored as 0.

Study of children's fear in the lab : an analysis of a modified version of a fear conditioning paradigm developed by Neumann et al. (2008)

https://ddd.uab.cat/pub/posters/2018/200996/CSM18_AIvanova.pdf

Study of children's fear in the lab : an analysis of a modified version of a fear conditioning paradigm developed by Neumann et al. (2008)

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