Format

Send to

Choose Destination
Psychopharmacology (Berl). 2018 May;235(5):1497-1511. doi: 10.1007/s00213-018-4861-4. Epub 2018 Mar 3.

The acute effects of cocoa flavanols on temporal and spatial attention.

Author information

1
Department of Psychology, Experimental Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712, TS, Groningen, The Netherlands. a.karabay@rug.nl.
2
Department of Psychology, Experimental Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712, TS, Groningen, The Netherlands.
3
Department of Psychology, Centre for Integrative Neuroscience & Neurodynamics, University of Reading, Reading, UK.

Abstract

In this study, we investigated how the acute physiological effects of cocoa flavanols might result in specific cognitive changes, in particular in temporal and spatial attention. To this end, we pre-registered and implemented a randomized, double-blind, placebo- and baseline-controlled crossover design. A sample of 48 university students participated in the study and each of them completed the experimental tasks in four conditions (baseline, placebo, low dose, and high-dose flavanol), administered in separate sessions with a 1-week washout interval. A rapid serial visual presentation task was used to test flavanol effects on temporal attention and integration, and a visual search task was similarly employed to investigate spatial attention. Results indicated that cocoa flavanols improved visual search efficiency, reflected by reduced reaction time. However, cocoa flavanols did not facilitate temporal attention nor integration, suggesting that flavanols may affect some aspects of attention, but not others. Potential underlying mechanisms are discussed.

KEYWORDS:

Attention; Cocoa flavanols; Rapid serial visual presentation; Temporal integration; Visual search

PMID:
29502273
PMCID:
PMC5920121
DOI:
10.1007/s00213-018-4861-4
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Springer Icon for PubMed Central
Loading ...
Support Center