Neural markers of memory consolidation do not predict temporal estimates of encoded items



Interval timing in everyday tasks involves keeping track of multiple concurrent intervals, often without an explicit starting signal. We are exploring the notion that the starting signal is closely connected to working memory encoding. In this model, the consolidation of an event in working memory initiates cortical oscillations that also serve as the onset of a perceived time interval. In this study we tested if memory consolidation is used as a starting signal of interval timing. Subjects were shown targets in an RSVP in which the second target would sometimes be presented within the window of the attentional blink. Subjects then reported the identity and the onset of the targets, allowing us to determine the subjective duration between the first target (T1) and second (T2). Memory consolidation of identified targets within the attentional blink window is presumably delayed, as is the target’s P3 ERP component. Therefore, if memory consolidation is the starting signal of interval timing, we would expect relatively long estimated durations when T2 is presented within this window. Furthermore, we expect the subjective duration to be a function of the P3 latencies of T2. Estimated durations were not longer when memory consolidation was presumably delayed. Also, EEG analysis did not reveal a relation between P3 latency and subjective duration. These results suggest that there is no direct connection between memory consolidation of targets and the timing of intervals between these targets in an attentional blink task.
Originele taal-2English
StatusPublished - 14-dec-2017
EvenementWinter Conference Nederlandse Vereniging voor Psychonomie 2017 - Egmond aan Zee, Netherlands
Duur: 14-dec-201716-dec-2017


ConferenceWinter Conference Nederlandse Vereniging voor Psychonomie 2017
Verkorte titelNVP
StadEgmond aan Zee

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