IBYME   02675
INSTITUTO DE BIOLOGIA Y MEDICINA EXPERIMENTAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Eletrophysiological correlates of Stimulus Equivalence Classes: A Semanting priming study
Autor/es:
SÁNCHEZ, FEDERICO JOSÉ; MENENDEZ, JOAQUIN; IDESIS, SEBASTIAN; POLTI,L IGNACIO; PAPAGNA, VICTORIA; AVELLANEDA, MATIAS; SANTILLAN, MATEO; YORIO, ALBERTO
Lugar:
Mar del Plata
Reunión:
Congreso; XXX Congreso de la Sociedad Argentina de investigación en Neurociencias (SAN); 2015
Institución organizadora:
Sociedad Argentina de investigación en Neurociencias (SAN)
Resumen:
The paradigm of Stimulus Equivalence Classes (SEE) has proven to be relevant for the investigation of semantic processes of learning (Wulfert & Hayes, 1988). Barnes-Holmes et al. (2005) showed that the presentation of stimuli pairs related and unrelated by equivalence generated a potential similar to the N400. The objective of this research was to evaluate the differences in the physiological measures and in the behavioral responses in the different conditions (Trained, Symmetry and Equivalence) and type of relation (Related and Unrelated). 52 subjects received training in SEE and were then tested in a semantic priming task and a matching to sample task with electroencephalographic register. During this phasem reaction times were compared between pairs of stimuli (prime-target) related (stimuli belonging to the same class) and unrelated (stimuli belonging to different classes). A repeated measures ANOVA with permutations was made with reaction times as dependent variable comparing Condition (Trained, Symmetry and Equivalence) and Relation (Related and Unrelated). A principal effect of Condition and a principal effect of Relation were found. Regarding the electroencephalographic register, a negative potential was observed between 200 and 400 milliseconds and a positive potential was observed between 400 and 600 milliseconds after the target stimulus.