Mismatch negativity and auditory sensory memory evaluation: a new faster paradigm

被引：44

作者：

Grau, C ^{[1
]}

Escera, C ^{[1
]}

Yago, E ^{[1
]}

Polo, MD ^{[1
]}

机构：

[1] Univ Barcelona, Dept Psychiat & Clin Psychobiol, Neurodynam Lab, Barcelona 08035, Catalonia, Spain

来源：

NEUROREPORT | 1998年 / 9卷 / 11期

关键词：

audition; echoic memory; event-related brain potentials (ERP); memory trace decay; MMN;

D O I：

10.1097/00001756-199808030-00005

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

A new faster paradigm to measure the duration of auditory sensory memory, as indexed by mismatch negativity (MMN) suppression to stimuli presented at increasing inter-stimulus intervals (ISI), is proposed. Trains of three stimuli were delivered at very short ISI (300 ms). The inter-train interval varied according to the memory probe interval (MPI) tested. Trains started randomly with a deviant or standard stimulus (50% each), with their event-related brain potentials subtracted to obtain the MMN. The new paradigm provided MMNs identical to the conventional one at MPIs of 0.4 and 4.0s in young subjects, and revealed MMN suppression when the MPI was increased to 5.0 s in older subjects. The new paradigm estimates auditory sensory memory duration in one-third the time of conventional MMN. NeuroReport 9: 2451-2456 (C) 1998 Rapid Science Ltd.

引用

页码：2451 / 2456

页数：6

共 22 条

[1] CEREBRAL GENERATORS OF MISMATCH NEGATIVITY (MMN) AND ITS MAGNETIC COUNTERPART (MMNM) ELICITED BY SOUND CHANGES [J].