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Front Aging Neurosci. 2016 Jan 22;8:2. doi: 10.3389/fnagi.2016.00002. eCollection 2016.

Electrophysiological Indicators of the Age-Related Deterioration in the Sensitivity to Auditory Duration Deviance.

Author information

1
Laboratory of Neuropsychology, Nencki Institute of Experimental BiologyWarsaw, Poland; University of Social Sciences and HumanitiesWarsaw, Poland.
2
Laboratory of Neuropsychology, Nencki Institute of Experimental Biology Warsaw, Poland.
3
Center of Functionally Integrative Neuroscience (CFIN), Aarhus University/Aarhus University HospitalAarhus, Denmark; Cognitive Brain Research Unit, Cognitive Science, Institute of Behavioural Sciences, University of HelsinkiHelsinki, Finland.
4
Center of Functionally Integrative Neuroscience (CFIN), Aarhus University/Aarhus University HospitalAarhus, Denmark; Cognitive Brain Research Unit, Cognitive Science, Institute of Behavioural Sciences, University of HelsinkiHelsinki, Finland; Department of Psychology, University of TartuTartu, Estonia.

Abstract

The present study investigates age-related changes in duration discrimination in millisecond time domain. We tested young (N = 20, mean age = 24.5, SD = 2.97) and elderly (N = 20, mean age = 65.2, SD = 2.94) subjects using the mismatch negativity (MMN) paradigm. White-noise bursts of two different durations (50 and 10 ms) were presented in two oddball blocks. In one block (Increment Condition), the repetitive sequence of 10 ms standards was interspersed by occasional 50 ms deviants. In the Decrement Condition, the roles of the two stimuli were reversed. We analyzed the P1-N1 complex, MMN and P3a and found the effect of age for all these components. Moreover, the impact of stimulus presentation condition (increment/decrement) was observed for MMN and P3a. Our results confirmed the previous evidence for deteriorated duration discrimination in elderly people. Additionally, we found that this effect may be influenced by procedural factors.

KEYWORDS:

P3a; aging; duration discrimination; mismatch negativity (MMN); temporal information processing

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