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. Author manuscript; available in PMC: 2007 Nov 22.
Published in final edited form as: Psychiatry Res. 2006 Oct 3;148(1):47–54. doi: 10.1016/j.pscychresns.2006.02.004

Table 1.

Metabolite values during baseline and visual stimulation, averaged across glycemic conditions

EC1 EC2 VS2 VS3 F ratio P value
Lactate/NAA 0.058 0.057 0.061 0.062 6.59 0.0046
Lactate/Cr 0.160 0.158 0.172 0.173 7.05 0.0035
NAA/Cr 2.772 2.769 2.809 2.789 0.77 NS
Ch/Cr 0.9174 0.9203 0.9399 0.9367 1.98 NS
0.9 ppm/NAA 0.024 0.024 0.023 0.023 0.35 NS

EC1 and EC2 are eyes closed baseline conditions, VS2 and VS3 are visual stimulation conditions. F ratio calculated by ANOVAR over the 4 time periods shown (df = 3, 15 for all). Note that this analysis excludes data from the first minute following the onset of visual stimulation (VS1). Signal centered at 0.9 ppm (normalized to NAA) serves as a control for possible changes in lipid signal over time.