POTENCIALS EVOCATS (P300, N400 i N200) I PARÀMETRES ROC I DE LA TDS APLICATS A COMPONENTS IMPLÍCITS DE LA MEMÒRIA EVOKED POTENTIALS (P300, N400 AND N200) AND ROC PARAMETERS AND TDS APPLIED TO IMPLICIT MEMORY COMPONENTS

Introduction: We propose the use of two techniques, evoked potentials events related to facts (PERF) and measures of the signal detection theory (SDT). Using these techniques we study the functional knowledge of some memory components. Aims: To show which indicators allow us to distinguish between memory components: PERF latency and amplitude and SDT measures. Participants: data came from 8 training participants, reported along 8 sessions. Results: Statistically significant differences arose depending on the type of memory, and in the N200 amplitude. Moreover, there were also differences in the mean of latency time among components and in the grand average, or general mean, in both experimental conditions: explicit memory and memory related to stimulus manipulation (components closer to what, from the theoretical point of view, is conceptualized as the implicit, without being purely implicit). Conclusions: The statistically significant differences between false alarms and N200 amplitudes between the two conditions of the study showed diverse functions of the memory. Furthermore, from the SDT, continuity of processes is assumed, for instance, z-ROC curves in accumulated and continuing indicators (without the presence of thresholds). The average mean permitted us to describe the continuity and differences of both memories.