For the millions of adults managing ADHD who live in urban environments with limited green space access, the question of whether a virtual forest walk could substitute for a real one is far from trivial. If virtual reality nature exposure activates the same neural restoration pathways as real nature, it could democratize a low-cost, non-pharmacological cognitive intervention in a meaningful way.
This registered protocol outlines a 80-participant randomized study — 40 adults with confirmed ADHD diagnoses and 40 neurotypical controls — designed to pit real nature against immersive VR-simulated nature head-to-head. Both conditions involve a single 20-minute seated exposure while 32-channel mobile EEG captures brain oscillatory activity in real time. Immediately after, participants complete gamified cognitive tasks targeting cognitive flexibility and metacognition, alongside validated self-report instruments measuring mood, perceived restoration, nature connectedness, and simulator sickness. Crucially, the design allows researchers to examine whether individual neurocognitive profiles and specific ADHD symptom dimensions — inattention versus hyperactivity-impulsivity — modulate response magnitude and durability.
Attentional Restoration Theory has accumulated reasonable empirical support in neurotypical populations, but the ADHD literature remains sparse and methodologically inconsistent. Adults with ADHD display atypical theta and alpha oscillations — brain rhythms centrally involved in sustained attention and cognitive control — making them an informative population for testing environment-brain interactions. Prior VR nature studies have largely relied on self-report outcomes rather than direct neural measurement, a gap this EEG-embedded protocol directly addresses. Limitations worth flagging: this is a single-exposure, single-session design, which cannot address whether any detected benefits persist or accumulate. The seated VR format also reduces ecological validity compared to ambulatory real-nature conditions. Nonetheless, as a mechanistic protocol with objective neural endpoints and a clinical subgroup, this study is positioned to generate genuinely actionable data — particularly for clinicians and researchers exploring environmental adjuncts to ADHD management.
