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Iron status and variations in electroencephalography (EEG) during five cognitive tasks in Indian adolescents
Author(s) -
Hammons Julie,
Wenger Michael,
Scott Samuel,
Murray-Kolb Laura,
Ghugre Padmini,
Udipi Shobha,
Boy Erick,
Haas Jere
Publication year - 2012
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.26.1_supplement.1031.14
Subject(s) - electroencephalography , cognition , iron deficiency , context (archaeology) , audiology , working memory , psychology , effects of sleep deprivation on cognitive performance , perception , cognitive test , echoic memory , developmental psychology , medicine , anemia , neuroscience , psychiatry , paleontology , biology
Iron deficiency (ID) is the most common micronutrient deficiency globally, and is associated with cognitive and perceptual deficits. Previous work has been limited in the combination of specific measures of cognition with simultaneous measurement of brain state in the context of human ID. The subjects were part of a randomized, double‐blind trial testing the efficacy of iron‐biofortified pearl millet as a mechanism to improve iron status. A cross‐sectional analysis of baseline data is presented here. Subjects (n= 75; 12–16 y) were from two residential schools in Maharashtra, India. Iron status was assessed by hemoglobin, serum ferritin, and serum transferrin receptor. Brain functioning was assessed via electroencephalography (EEG) while subjects completed 5 measures of perceptual and cognitive performance: simple reaction time, low‐ and high‐level attentional control, semantic memory, and recognition memory. These measures were chosen to analyze perceptual and cognitive components of schoolwork and for comparability to previous work in adults. We examined the relation of iron status to EEG for each task. Sub‐analyses by age and gender were also considered. Supported by Harvest Plus and NSF.