Brain mechanisms of temporal processing in impulsivity: Relevance to attention-deficit hyperactivity disorder

Area of Science:

• Neuroscience
• Psychology
• Chronobiology

Background:

• Impulsivity is a core feature of attention-deficit hyperactivity disorder (ADHD).
• A proposed explanation for impulsivity involves an accelerated perception of time.
• This altered time perception may influence cognitive function and environmental engagement in ADHD.

Purpose of the Study:

• To critique the hypothesis linking impulsivity in ADHD to an accelerated time perception.
• To explore the neurobiological underpinnings of time perception alterations in ADHD.
• To investigate the role of temporal representations in ADHD etiology and treatment.

Main Methods:

• Literature review and critical analysis of existing research on time perception and ADHD.
• Discussion of neurobiological models of time perception, including brain networks and specific regions.
• Examination of the relationship between temporal processing, ADHD symptoms, and medication effects.

Main Results:

• Evidence suggests altered time perception is associated with attention-deficit hyperactivity disorder.
• A distributed brain network, including the hippocampus and temporal lobe, is implicated in time perception.
• Abnormalities in temporal representations may contribute to ADHD symptomology.

Conclusions:

• Altered time perception is a plausible factor in attention-deficit hyperactivity disorder.
• Understanding temporal processing deficits may offer insights into ADHD's origins.
• This perspective could guide the development of novel therapeutic interventions for ADHD.