Ceguera; Química Encefálica; Lóbulo Occipital/química; Adulto; Anciano; Femenino; Humanos; Espectroscopía de Resonancia Magnética; Masculino; Persona de Mediana Edad

ANOVA; BOLD; CSF; EB; FID; FWHM; GM; MRS; N-acetyl aspartate; N-methyl-d-aspartate; NAA; NMDA; PET; PRESS; Position Resolved Spectroscopy; S/N; SC; WM; analysis of variance; blindness; blood-oxygen-level-dependent; cerebral spinal fluid; cross-modal plasticity; early blind; free-induction decay; full width at half maximum; gray matter; magnetic resonance spectroscopy; occipital; positron emission tomography; sighted control; signal to noise ratio; visual deprivation; white matter