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Spectra obtained from the occipital lobe of two healthy volunteers (a and b). Each spectrum is summed from the last 25.5 min of data acquisition with NS = 384 scans, Lorentzian broadening, −2.0 Hz; Gaussian broadening, 0.3. In addition to Glu C5 and C1, Gln C5 and C1, and Asp C4 and C1, NAA C5 (174.3 ppm) was detected. Asp, aspartate; Gln, glutamine; Glu, glutamate; NAA, N-acetylaspartate.
