Maturation of the P3 and concurrent oscillatory processes during adolescence
| Autor: | Christina Schmiedt-Fehr, Birgit Mathes, Annika Susann Wienke, Canan Basar-Eroglu, Ksenia Khalaidovski |
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| Rok vydání: | 2015 |
| Předmět: |
Male
medicine.medical_specialty Adolescent Electroencephalography Audiology Developmental change 050105 experimental psychology Developmental psychology Amplitude modulation 03 medical and health sciences Young Adult 0302 clinical medicine Time windows Physiology (medical) Parietal Lobe medicine Humans 0501 psychology and cognitive sciences Theta Rhythm Oddball paradigm medicine.diagnostic_test 05 social sciences Brain maturation Adolescent Development Sensory Systems Frontal Lobe medicine.anatomical_structure Amplitude Neurology Delta Rhythm Scalp Evoked Potentials Visual Female Neurology (clinical) Psychology 030217 neurology & neurosurgery |
| Zdroj: | Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology. 127(7) |
| ISSN: | 1872-8952 |
| Popis: | Objective During adolescence event-related modulations of the neural response may increase. For slow event-related components, such as the P3, this developmental change may be masked due to increased amplitude levels of ongoing delta and theta oscillations in adolescents. Methods In a cross-sectional study design, EEG was measured in 51 participants between 13 and 24 years. A visual oddball paradigm was used to elicit the P3. Our analysis focused on fronto-parietal activations within the P3 time-window and the concurrent time–frequency characteristics in the delta (∼0.5–4 Hz) and theta (∼4–7 Hz) band. Results The parietal P3 amplitude was similar across the investigated age range, while the amplitude at frontal regions increased with age. The pre-stimulus amplitudes of delta and theta oscillations declined with age, while post-stimulus amplitude enhancement and inter-trial phase coherence increased. These changes affected fronto-parietal electrode sites. Conclusions The parietal P3 maximum seemed comparable for adolescents and young adults. Detailed analysis revealed that within the P3 time-window brain maturation during adolescence may lead to reduced spontaneous slow-wave oscillations, increased amplitude modulation and time precision of event-related oscillations, and altered P3 scalp topography. Significance Time–frequency analyses may help to distinguish selective neurodevelopmental changes within the P3 time window. |
| Databáze: | OpenAIRE |
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