Mathes B, Khalaidovski K, Wienke AS, Schmiedt-Fehr C, Basar-Eroglu C. Maturation of the P3 and concurrent oscillatory processes during adolescence.
Clin Neurophysiol 2016;
127:2599-609. [PMID:
27291879 DOI:
10.1016/j.clinph.2016.04.019]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 04/12/2016] [Accepted: 04/23/2016] [Indexed: 10/21/2022]
Abstract
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 24years. 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 (∼0.5-4Hz) and theta (∼4-7Hz) 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.
Collapse