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| Content Provider | Springer Nature Link |
|---|---|
| Author | Escera, Carles Leung, Sumie Grimm, Sabine |
| Copyright Year | 2013 |
| Abstract | Detection of changes in the acoustic environment is critical for survival, as it prevents missing potentially relevant events outside the focus of attention. In humans, deviance detection based on acoustic regularity encoding has been associated with a brain response derived from the human EEG, the mismatch negativity (MMN) auditory evoked potential, peaking at about 100–200 ms from deviance onset. By its long latency and cerebral generators, the cortical nature of both the processes of regularity encoding and deviance detection has been assumed. Yet, intracellular, extracellular, single-unit and local-field potential recordings in rats and cats have shown much earlier (circa 20–30 ms) and hierarchically lower (primary auditory cortex, medial geniculate body, inferior colliculus) deviance-related responses. Here, we review the recent evidence obtained with the complex auditory brainstem response (cABR), the middle latency response (MLR) and magnetoencephalography (MEG) demonstrating that human auditory deviance detection based on regularity encoding—rather than on refractoriness—occurs at latencies and in neural networks comparable to those revealed in animals. Specifically, encoding of simple acoustic-feature regularities and detection of corresponding deviance, such as an infrequent change in frequency or location, occur in the latency range of the MLR, in separate auditory cortical regions from those generating the MMN, and even at the level of human auditory brainstem. In contrast, violations of more complex regularities, such as those defined by the alternation of two different tones or by feature conjunctions (i.e., frequency and location) fail to elicit MLR correlates but elicit sizable MMNs. Altogether, these findings support the emerging view that deviance detection is a basic principle of the functional organization of the auditory system, and that regularity encoding and deviance detection is organized in ascending levels of complexity along the auditory pathway expanding from the brainstem up to higher-order areas of the cerebral cortex. |
| Starting Page | 527 |
| Ending Page | 538 |
| Page Count | 12 |
| File Format | |
| ISSN | 08960267 |
| Journal | Brain Topography |
| Volume Number | 27 |
| Issue Number | 4 |
| e-ISSN | 15736792 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2013-11-12 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Mismatch negativity MMN Change detection Middle-latency response MLR Oddball Stimulus-specific adaptation SSA Inferior colliculus Frequency following response (FFR) Neurosciences Psychiatry Neurology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neurology Anatomy Radiology, Nuclear Medicine and Imaging Neurology (clinical) Radiological and Ultrasound Technology |
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