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| Liisa I. Tammela |
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University of Kuopio, Depart. of Clinical Nutrition, P.O Box 1627, 70211 Kuopio, FINLAND
e-mail: Liisa.Tammela@uku.fi |
Poster Presentation: |
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| Brain electrical activity during exposure to food in obese binge-eating women. |
| Tammela Liisa I (1), Karhunen Leila J (1), Pääkkönen Ari (2), Karhu Jari (2), Kuikka Jyrki T (2), Lappalainen Raimo (3), Uusitupa Matti I. J (1) | |
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(1) Dept. of Clinical Nutrition, University of Kuopio, Kuopio, Finland. (2) Kuopio University Hospital; (3) University of Tampere, FINLAND. |
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| Background: The binge-eating subjects eat large amounts of food within a
discrete period of time and loose control over eating during the eating
episodes. It is suggested that some of the cerebral mechanisms, which
affect or regulate their eating behaviour could be disturbed especially in
situations when they are exposed to food.
Objective: The aim of the study was to examine, by the quantitative
electroencephalography, the brain electrical activity during the food exposure
in obese binge-eating women (OB-BED, n=7) and in obese women without
eating disorders (OB-non-ED, n=8). In addition, biochemical and emotional
responses to food exposure were examined. The baseline 1 and the
control-exposure periods formed the control experiment, and the baseline 2
and the food-exposure periods formed the food experiment.
Results: The brain electrical activity of the OB-BED was broadly increased
compared with the OB-non-ED during the whole study. In addition, during
the food experiment the OB-BED had enhanced electrical activity in left and
right fronto-central derivations and in the left centro-parietal derivation,
and enhanced beta activity in the left fronto-central and centro-parietal
derivations. There were no significant differences between the groups in the
measured biochemical responses or in the emotional assessments during
the study. Plasma noradrenaline concentrations were higher during the food
experiment than during the control experiment without any
experiment-by-group -interaction.
Conclusions: These results suggest the OB-BED to have more stimulated
physiological readiness for activity in the presence of food compared with
the one of the OB-non-ED. |
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