Related Experiment Video
Updated: Feb 6, 2026
07:30
Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
7.8K
Developmental Trajectory of Infant Brain Signal Variability: A Longitudinal Pilot Study
Chiaki Hasegawa1, Tetsuya Takahashi2, Yuko Yoshimura1,3
1Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan.
Frontiers in Neuroscience
|August 30, 2018
Summary
Infant brain signal complexity develops uniquely across different time scales. This study tracked magnetoencephalography (MEG) complexity in infants, finding increases in higher temporal scales during a key developmental period.
Area of Science:
- Neuroscience
- Developmental Biology
- Signal Processing
Background:
- Infant brain development involves rapid neural network formation.
- Neural signal complexity is a potential indicator of brain development.
- The developmental trajectory of infant brain signal complexity is not well understood.
Purpose of the Study:
- To investigate the longitudinal changes in brain signal complexity during infancy.
- To determine the developmental trajectory of magnetoencephalography (MEG) signal complexity from 2 months to 3 years of age.
Main Methods:
- Utilized multiscale entropy (MSE) analysis on longitudinal MEG data.
- Analyzed brain signal complexity across multiple temporal scales.
- Included five infants in the longitudinal study.
Main Results:
- Observed scale-dependent developmental trajectories in signal complexity.
- Found a predominant increase in complexity at higher temporal scales between 5 and 15 months.
- Noted constant complexity at lower temporal scales, with one exception of decreased complexity.
Conclusions:
- This is the first longitudinal study using MSE on infant MEG data to examine brain signal complexity.
- Results suggest specific patterns of neural complexity development in early infancy.
- Findings provide insights into the longitudinal changes in neural dynamics of the developing infant brain.
Related Concept Videos
01:26Longitudinal Studies
533
Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
533
02:20Longitudinal Research
13.3K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
13.3K
01:26Orthogonal Trajectories
67
Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
67
01:21Pilot and Numeric Relaying
492
Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
492
01:27Introduction to Developmental Psychology
1.6K
Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.Developmental MilestonesA key concept in developmental psychology is...
1.6K
01:29Three Developmental Domains
1.1K
Human development is typically examined across three main domains: physical, cognitive, and socio-emotional. These domains represent the significant areas of change and continuity throughout the lifespan, from infancy to late adulthood.
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and weight,...
Physical Development
Physical processes, also known as maturation, encompass the biological changes that occur across an individual's life. These changes begin with genetic inheritance and continue through various stages, including growth in height and weight,...
1.1K