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Clin Psychopharmacol Neurosci. 2018 Nov 30;16(4):481-488. doi: 10.9758/cpn.2018.16.4.481.

Neuro-cognitive Ramifications of Fasting and Feeding in Obese and Non-obese Cases.

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Psychiatry and Psychology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran.


Preliminary studies have claimed that short term fasting would negatively affect school performance and cognition. In contrast some other studies have reported not important decline in cognition and executive function as a result of fasting. Also limited attention was generally devoted to dietetic regimens, nutritional status and body weight. Yet neuroscience and neuro-cognitive aspects of acute hunger on the electroencephalogram and differences between obese and non-obese cases is not well understood. Hence, we decided to design and perform a case study in a more controlled situation similar to reality. Therefore, we performed several examinations including subjective tests (for eating status) and objective tests (cognitive tests such as Stroop effect and Sternberg search and electroencephalogram measures such as steady-state visual evoked potential and auditory steady-state responses) for an obese and a non-obese academic case before and after a simple breakfast. The results showed that the breakfast effects on the neuro-cognitive functions depend on either obesity status, nutritional status of the case or the type of cognitive task (visual or auditory). This paper would open a new insight to answer some important questions about the neuro-cognitive implications of fasting and feeding in obese and non-obese human cases.


Electroencephalography; Fasting and Feeding; Neuro-cognition; Obesity

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