Temporal characteristics of auditory sensory memory: neuromagnetic evidence.

We investigated the temporal dependencies of N100 m, the most prominent deflection of the auditory evoked response, using whole-head neuromagnetic recordings. Stimuli were presented singly or in pairs (tones in the pair were separated by 210 ms) at interstimulus intervals (ISIs) of 0.6-8.1 s. N100 m to single stimuli and to the first tone of the pair had similar temporal recovery functions, plateauing at ISIs of 6 s. N100 m to the second tone in the pair, which was smaller than that to the first except with short ISIs, plateaued with ISIs of about 4 s. Source analysis revealed that the N100 m could be decomposed into two sources separated by about 1 cm on the supratemporal plane. The recovery function of the posterior source was not affected by stimulus presentation, whereas that of the anterior source was. Activity in the anterior area appears to reflect the effects of temporal integration. We relate these results to auditory sensory memory.

[1]  V. Jousmäki,et al.  Temporal integration in auditory sensory memory: neuromagnetic evidence. , 1996, Electroencephalography and clinical neurophysiology.

[2]  R Hari,et al.  Deviant auditory stimuli activate human left and right auditory cortex differently. , 1996, Cerebral cortex.

[3]  C D Tesche,et al.  Signal-space projections of MEG data characterize both distributed and well-localized neuronal sources. , 1995, Electroencephalography and clinical neurophysiology.

[4]  F. Perrin,et al.  Separate Representation of Stimulus Frequency, Intensity, and Duration in Auditory Sensory Memory: An Event-Related Potential and Dipole-Model Analysis , 1995, Journal of Cognitive Neuroscience.

[5]  D. Javitt,et al.  The Mismatch Negativity of Event‐Related Potentials as a Probe of Transient Auditory Memory: A Review , 1995, Ear and hearing.

[6]  E. Schröger,et al.  Processing of auditory deviants with changes in one versus two stimulus dimensions. , 1995, Psychophysiology.

[7]  R. Näätänen,et al.  Temporal integration of auditory information in sensory memory as reflected by the mismatch negativity , 1994, Biological Psychology.

[8]  R. Ilmoniemi,et al.  Interaction between representations of different features of auditory sensory memory. , 1993, Neuroreport.

[9]  I. Winkler,et al.  Event-related brain potentials reflect traces of echoic memory in humans , 1993, Perception & psychophysics.

[10]  R. Hari,et al.  The Human Auditory Sensory Memory Trace Persists about 10 sec: Neuromagnetic Evidence , 1993, Journal of Cognitive Neuroscience.

[11]  L. McEvoy,et al.  Human auditory cortical mechanisms of sound lateralization: II. Interaural time differences at sound onset , 1993, Hearing Research.

[12]  R. Ilmoniemi,et al.  Magnetoencephalography-theory, instrumentation, and applications to noninvasive studies of the working human brain , 1993 .

[13]  R. Hari,et al.  Auditory evoked fields covary with perceptual grouping , 1993, Biological Psychology.

[14]  J. Mäkelä,et al.  Functional differences between auditory cortices of the two hemispheres revealed by whole‐head neuromagnetic recordings , 1993 .

[15]  L. Kaufman,et al.  Behavioral lifetime of human auditory sensory memory predicted by physiological measures. , 1992, Science.

[16]  M. Tervaniemi,et al.  Representation of abstract attributes of auditory stimuli in the human brain. , 1992, Neuroreport.

[17]  L. Kaufman,et al.  Human auditory primary and association cortex have differing lifetimes for activation traces , 1992, Brain Research.

[18]  R. Hari,et al.  Evoked responses of human auditory cortex may be enhanced by preceding stimuli. , 1989, Electroencephalography and clinical neurophysiology.

[19]  R. Hari,et al.  Spatial resolution of neuromagnetic records: theoretical calculations in a spherical model. , 1988, Electroencephalography and clinical neurophysiology.

[20]  T. Picton,et al.  The N1 wave of the human electric and magnetic response to sound: a review and an analysis of the component structure. , 1987, Psychophysiology.

[21]  J. Mäkelä,et al.  Neuromagnetic responses of the human auditory cortex to on- and offsets of noise bursts. , 1987, Audiology : official organ of the International Society of Audiology.

[22]  N. Cowan.  On short and long auditory stores. , 1984, Psychological bulletin.

[23]  R. Hari,et al.  Interstimulus interval dependence of the auditory vertex response and its magnetic counterpart: implications for their neural generation. , 1982, Electroencephalography and clinical neurophysiology.

[24]  R. Nodar,et al.  Loudness enhancement and summation in pairs or short sound bursts , 1974 .

[25]  W. G. Sokolich,et al.  On loudness enhancement of a tone burst by a preceding tone burst , 1972 .

[26]  R. J. Irwin,et al.  Loudness effects in pairs of tone bursts , 1971 .

[27]  R. Efron,et al.  Effect of stimulus duration on perceptual onset and offset latencies , 1970 .

[28]  R Efron,et al.  The minimum duration of a perception. , 1970, Neuropsychologia.

[29]  R Efron,et al.  The relationship between the duration of a stimulus and the duration of a perception. , 1970, Neuropsychologia.

[30]  H. Davis,et al.  The slow response of the human cortex to auditory stimuli: recovery process. , 1966, Electroencephalography and clinical neurophysiology.

[31]  R. Plomp.  Rate of Decay of Auditory Sensation , 1964 .