Working memory task in the Morris water maze ( MWM) . Working memory performance in the MWM of male control rats and ID + n-3 FAD rats repleted with an Fe + ALA, ID + ALA, Fe + n-3 FAD, or an ID + n-3 FAD diet for 5 weeks. (A) Mean distance moved per trial to reach hidden platform located at different positions across 4 days, with 4 trials per day in the working memory task; (B) working memory performance expressed as difference in distance moved between trial 1 and trial 2. Values are means ± SEM, n = 7–8. ALA, alpha-linolenic acid; n-3 FAD, n-3 fatty acid deficient; Fe, iron; ID, iron deficient.