John B. Siegfried, Ph.D
Professor
jsiegfried@pco.edu
Education:
BA Psychology, The University of
Rochester, 1960
MS, Ph.D., Brown University, 1962, 1967
Role at PCO:
Professor of Physiological Optics
Selected representative publications:
- Shan Y, Moster ML, Roemer RA, Siegfried J Abnormal function of the parvocellular visual system in anisometropic amblyopia. J Ped Ophthalmol Strab 2000 (In press).
- Miki A, Liu GT, Goldsmith ZG, Siegfried J, Hulvershorn J, Raz J, Haselgrove JC Effect of check size on visual cortex activation studied by functional MRI. ARVO 2000.
- Schanel-Klitsch ES, Siegfried JB High-frequency wavelets in early infancy. Infant Beh Develop 1987, 10, 321-336.
- Siegfried JB Digital vs analog filtering of electrophysiological data utilizing microprocessors. Doc Ophthalmologica Proc Ser 1983, 37, 247-252.
- Whittaker SG, Siegfried JB Origins of wavelets in the VEP. EEG J 1983, 55, 91-101.
- Press LJ, Cummings RW, Siegfried JB, Altman B Electrodiagnostic testing of visually impaired children under sedation. J Vis Impair Blindness 1982, 76, 129-132.
- Siegfried JB, Lukas J Early wavelets in the VECP. Investig Ophthalmol Vis Sci 1981, 20, 125-129.
- May JG, Harter MR, Siegfried JB Electrophysiological and psychophysical measures of interocular suppression. Psychophysiol 1981, 18, 26-31.
- May JG, Cullen JK, Moskowitz-Cook AF, Siegfried JB The effects of meridional variations on steady-state visual evoked potentials. Vis Res 1979, 18, 1395-1401.
- Siegfried JB VECP: its spectral sensitivity. In BR Wooten, JC Armington, J Krauskopf (Eds), Visual Psychophysics: Its Physiological Bases; New York: Academic Press, 1978.
- Siegfried JB Spectral sensitivity of human visual evoked cortical potentials: a new method and a comparison with psychophysical data. Vis Res 1971, 11, 405-417.
- Siegfried JB, Tepas DI, Sperling, HG, Hiss RA Evoked brain correlates of psychophysical responses: heterochromatic brightness matching. Science 1965, 149, 321-323.
- Boynton RM, Siegfried JB Psychophysical estimates of on-responses to brief light flashes. J opt Soc Amer 1962, 52, 720-721.
Professional honors and activities:
Ad hoc reviewer for several professional journals.
Clinical specialty:
Clinical electrophysiology, Color vision, Contrast sensitivity, Thresholds.
Research Activities:
Non-invasive clinical electrophysiological assessment of visual acuity, and a comparison of the right and left visual pathways in very young children.