The impact of blackcurrant juice on attention, mood and brain wave spectral activity in young healthy volunteers.
Anthony W WatsonE J OkelloHelen BrookerS LesterGordon James McDougallKeith A WesnesPublished in: Nutritional neuroscience (2018)
There is a growing body of evidence from randomized controlled trials which indicates that consumption of berries has a positive effect upon the cognitive function of healthy adults. It has been recommended that studies combining cognitive and physiological measures be undertaken in order to strengthen the evidence base for the putative effects of flavonoid consumption on cognitive outcomes. This pilot study utilized a randomized, double-blind and placebo controlled crossover design to assess the influence of the acute administration of anthocyanin-rich blackcurrant juice, standardized at 500 mg of polyphenols, on mood and attention. Additionally, this trial used electroencephalography (EEG) to assess if any changes in cognitive performance are associated with changes in localized prefrontal cortex neuronal activity in nine healthy young adults. Outcomes from the pilot EEG data highlight an anxiolytic effect of the consumption of a single serve blackcurrant juice, as indexed by a suppression of α spectral power, and an increase in the slow wave δ and θ spectral powers. There was also an indication of greater alertness and lower fatigue, as indexed by an increase in β power and suppression of α spectral power. Outcomes from the CogTrack™ system indicated a small acute increase in reaction times during the digit vigilance task.
Keyphrases
- placebo controlled
- double blind
- optical coherence tomography
- working memory
- study protocol
- resting state
- phase iii
- young adults
- liver failure
- prefrontal cortex
- phase ii
- functional connectivity
- randomized controlled trial
- clinical trial
- dual energy
- bipolar disorder
- sleep quality
- respiratory failure
- open label
- drug induced
- aortic dissection
- type diabetes
- electronic health record
- phase ii study
- magnetic resonance imaging
- systematic review
- artificial intelligence
- radiation therapy
- extracorporeal membrane oxygenation
- high density
- weight loss
- glycemic control
- depressive symptoms
- middle aged
- blood brain barrier