2010, Number 3
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Cir Cir 2010; 78 (3)
Alteraciones neuroeléctricas en el estrabismo
Gallegos-Duarte M
Language: Spanish
References: 19
Page: 215-220
PDF size: 451.49 Kb.
ABSTRACT
Background: Neurometry measures bioelectrical cerebral activity qualitatively and quantitatively and is obtained from digital cerebral mapping. This methodology allows determination of the efficiency of short and long association tracts contained in the white matter through coherence analysis. Our objective was to demonstrate neurometric alterations in the cerebral cortex of subjects with essential strabismus.
Methods: We carried out a cross-sectional, descriptive and observational study. There were 23 parameters analyzed of the electrical activity of the cerebral cortex. These parameters were obtained using neurometric analysis of 16 children with essential strabismus. Results were compared with international standards of NeuroGuide.
Results:Neurometric alterations were observed in all cases analyzed: inter-temporal hypocoherence, increase in slow waves, decrease in the frequency in temporal lobes, increase in symmetry in occipital lobes, and decline and asymmetry in the power of both frontal lobes.
Conclusions: Strabismal patients have alterations in cortico-cortical, cortico-subcortical and interhemispheric interconnection pathways. The study suggests that the presence of these alterations is due to functional changes in the white matter and that these changes may be related to the pathophysiogenesis of disease.
REFERENCES
Gallegos-Duarte M, Rubio-Chevannier HF, Mendiola-Santibáñez J. Brain mapping alterations in strabismus. Brain Res J 2007;1:287-337.
Hoyt CS, Good WV. Infantile strabismus: what is it? where is it? Br J Ophthalmol 1994;78:325-326.
Thouvenin D, Tiberge M, Arne JL, Arbus L. Brain electrical activity mapping in the study of visual development and amblyopia in young children. J Pediatr Ophthalmol Strabismus 1995;32:10-16.
Mendola JD, Conner IP, Anjali R, Chan ST, Schwartz TL, Odom JV, et al. Voxel-based analysis of MRI detects abnormal visual cortex in children and adults with amblyopia. Hum Brain Mapping 2005;25:222- 236.
Gallegos-Duarte M. Respuesta cortical paradójica durante la fotoestimulación intermitente en el estrabismo disociado. Cir Cir 2005;73:163- 167.
Gallegos-Duarte M, Mendiola-Santibáñez J, Ortiz-Retana JJ, Rubín de Celis-Monteverde B, Vidal-Pineda R, Sigala-Zamora A. Desviación disociada. Estrabismo de origen cortical. Cir Cir 2007;4:243- 249.
Mendiola-Santibáñez JD, Gallegos-Duarte M, Ortiz-Retana JJ, López- Campos CE. Segmentación y análisis granulométrico de sustancia blanca y gris para el estudio del estrabismo usando transformaciones morfológicas. Rev Mex Ing Biomed 2007;38:92-104.
Calderón-González PL, Parra-Rodríguez MA, Libre-Rodríguez JJ, Gutiérrez JV. Análisis espectral de la coherencia cerebral en la enfermedad de Alzheimer. Rev Neurol 2004;38:422-427.
Adrian ED, Matthews BHC. The interpretation of potential waves in the cortex. J Physiol 1934;81:440-471. Disponible en http://jp.physoc. org/cgi/reprint/81/4/440
Méndez-Castillo JJ, Otero-Siliceso E, Martín-Sánchez A. Neurometría. Manual práctico, criterios, diagnósticos y tablas. Colección Biblioteca de la Salud. Disponible en http://www.fondodeculturaeconomica.com/ subdirectorios_site/Lecturas/LEC-048030R.pdf
Cabanyes-Truffino J. Cartografía cerebral: metodología y aplicaciones en la clínica neurológica. Rev Neurol 1999;28:1090-1098.
Céspedes-Gacía Y, González-Hernández JA, García-Fidalgo J, Beguería- Santos RA, Figueredo-Rodríguez P. Coherencia cerebral interictal en pacientes con epilepsia del lóbulo temporal. Rev Neurol 2003;27:1107-1111.
Pennefather PM, Clarke MP, Strong NP, Cottrell DG, Dutton J, Tin W. Risk factors for strabismus in children born before 32 weeks gestation. Br J Ophthalmol 1999;83:514-518.
Nishitani N, Uutela K, Shibasaki H, Haril R. Cortical visuomotor integration during eye pursuit and eye-finger pursuit. J Neurosci 1999;19:2647–2657.
Lennerstrand G. Central motor control in concomitant strabismus. Graefe’s Arch Clin Exp Ophthalmol 1988;226:172-174.
Thatcher RW, Krause PJ, Hribyk M. Cortico-cortical association fibers and EEG coherence: a two-compartmental model. Electroencephalogr Clin Neurophysiol 1986;64:123-143.
Cantero JL, Atienza M, Salas RM. Valor clínico de la coherencia EEG como índice electrofisiológico de conectividad córtico-cortical durante el sueño. Rev Neurol 2000;31:442-454.
Goldberg MP, Ransom BR. New light on white matter. Stroke 2003;34:330-332.
Follis FM, Blisard KS, Varvitsiotis PS, Pett SB, Temes RT, Wernly JA. Selective protection of gray and white matter during spinal cord ischemic injury. Ann Thorac Surg 1999;67:1362-1369.