Preattentive memory-based comparison of sound intensity
Publication date
2003-10-24
Document type
Forschungsartikel
Author
Organisational unit
Institut für Allgemeine Psychologie, Universität Leipzig
Publisher
Karger
Series or journal
Audiology and Neurotology
ISSN
Periodical volume
8
Periodical issue
6
First page
338
Last page
346
Peer-reviewed
✅
Part of the university bibliography
Nein
Language
English
Keyword
Mismatch negativity
Change detection
Sound intensity
Auditory sensory memory
Event-related potential (ERP)
Abstract
Changes in the intensity of repeated, ignored sounds elicit the mismatch negativity (MMN) brain response which reflects preattentive detection of the change. It is generally assumed that the MMN in response to intensity changes reflects a memory-based comparison mechanism rather than being due to differential states of refractoriness of intensity-specific cortical neurons. In the present study, an experimental protocol consisting of 4 oddball blocks and 1 control block was used in order to separate memory-comparison-related effects from refractoriness-related ones. This design allowed an assessment of intensity MMN using physically identical stimuli with equal probability of occurrence in separate blocks, while avoiding contamination by refractoriness. Results were consistent with an MMN in response to intensity change that reflects genuine memory-based comparison.
Version
Published version
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