Supported by the Academy of Finland and by the BIRCH Large-Scale Facility (Human Capital and Mobility Programme of the European Community) in the Low Temperature Laboratory of Helsinki University of Technology.
Temporal characteristics of auditory sensory memory: Neuromagnetic evidence
Article first published online: 30 JAN 2007
Volume 34, Issue 3, pages 308–316, May 1997
How to Cite
MCEVOY, L., LEVÄNEN, S. and LOVELESS, N. (1997), Temporal characteristics of auditory sensory memory: Neuromagnetic evidence. Psychophysiology, 34: 308–316. doi: 10.1111/j.1469-8986.1997.tb02401.x
The MRIs were obtained from the Department of Radiology. Helsinki University Central Hospital, and were evaluated by O. Salonen. We thank Riitta Hari and Mikko Uusitalo for comments on the manuscript.
Linda McFvoy's present address: EEG Systems Laboratory. One Rincon Center, 101 Spear Street, Suite 204, San Francisco, CA 94105, USA.
- Issue published online: 30 JAN 2007
- Article first published online: 30 JAN 2007
- (Received February 20, 1996; Accepted September 6, 1996)
- Short store;
- Long store;
- Auditory evoked response;
We investigated the temporal dependencies of N100m, 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. N100m to single stimuli and to the first tone of the pair had similar temporal recovery functions, plateauing at ISIs of 6 s. N100m 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 N100m 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.