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Related Concept Videos

Cognitive Development During Adolescence01:18

Cognitive Development During Adolescence

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During adolescence, individuals experience significant cognitive development that enhances their understanding of others' emotions and thoughts, known as cognitive empathy. This period is marked by an increased ability to adapt to others' perspectives and a more nuanced understanding of others' mental states, a skill that is foundational for social problem-solving and conflict avoidance. The development of cognitive empathy relies heavily on the theory of mind — the...
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Revisionist Views of Adolescent and Adult Cognition01:24

Revisionist Views of Adolescent and Adult Cognition

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A revisionist approach to Jean Piaget's theory of cognitive development has brought new insights that challenge and reinterpret his established ideas. Piaget proposed that the formal operational stage, emerging in adolescence, represents the culmination of cognitive maturity. During this stage, individuals are said to develop abstract thinking, engage in systematic problem-solving, and show a form of egocentrism, believing others are as preoccupied with their behavior as they are...
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Three Developmental Domains01:29

Three Developmental Domains

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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...
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Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
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Erikson's Theory on Socioemotional Development during Adolescence01:17

Erikson's Theory on Socioemotional Development during Adolescence

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Erik Erikson's fifth stage of psychosocial development, "identity versus role confusion," is crucial during adolescence (ages 12 to 18). In this stage, adolescents face the developmental task of forging a distinct personal identity, a process influenced by social, psychological, and biological changes typical of this period. Adolescents naturally explore different roles, behaviors, and ideologies as they navigate complex questions of self-concept, asking, "Who am I?" and...
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Neurotransmitters01:31

Neurotransmitters

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Neurotransmitters are essential chemical messengers within the nervous system, facilitating the communication between neurons. These chemical messengers, varying in function and effect, are critical for sustaining various aspects of neurological health and emotional well-being.
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Changes in Behavior and Neural Dynamics across Adolescent Development.

Lucrezia Liuzzi1, Daniel S Pine1, Nathan A Fox2

  • 1Emotion and Development Branch, National Institute of Mental Health, Bethesda, 20892, MD.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|October 17, 2023
PubMed
Summary
This summary is machine-generated.

During adolescence, brain development involves synaptic pruning, leading to improved cognitive functions like response inhibition. This study found older adolescents exhibit stronger neural dynamics, supporting computational models of brain maturation.

Keywords:
EEGadolescenceattractorcomputational modelingdevelopmentdynamicspruning

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Computational Neuroscience

Background:

  • Adolescence is a critical period for brain development, marked by significant changes in executive functions and neural structure.
  • Studies show gray matter volume decreases and excitatory synapses reduce by approximately 40% in the prefrontal cortex during adolescence.
  • Computational models suggest synaptic density changes influence task performance and neural dynamics, predicting deeper attractor basins for better performance.

Purpose of the Study:

  • To investigate the relationship between adolescent brain development, synaptic pruning, and neural dynamics.
  • To test the hypothesis that changes in neural dynamics, specifically attractor basin depth, underlie behavioral improvements during adolescence.

Main Methods:

  • Analysis of task-related neural dynamics using electroencephalography (EEG) in a longitudinal cohort of adolescents.
  • Examined behavioral performance on the Eriksen Flanker task.
  • Quantified attractor basin dynamics around event-related potentials during cognitive tasks.

Main Results:

  • Behavioral performance on the Eriksen Flanker task positively correlated with age.
  • Older adolescents demonstrated deeper attractor basins in task-related evoked EEG potentials.
  • Neural activity variability showed faster decay dynamics in older adolescents, indicating stronger attractor dynamics.

Conclusions:

  • Findings support computational models linking excitatory synaptic pruning to enhanced neural dynamics during adolescence.
  • The study provides a mechanistic link between synaptic pruning, altered neural dynamics, and improved cognitive control in adolescents.
  • Stronger attractor dynamics in older adolescents suggest a more efficient neural processing state.