References
- Bartley , S. H. 1959 . “ Central mechanisms of vision ” . In Handbook of Physiology, Section I: Neurophysiology. , Edited by: Field , J. , Magoun , H. W. and Hall , V. E. Vol. I , 713 – 740 . Washington : Amer. Physiol. Soc. .
- Bouman , H. E. 1934 . Rhythmical electrical stimulation of the retina and demonstration of an apparatus for rhythmical electrical stimulation . Acta Brev. Néerl. Physiol. , 4 : 114 – 115 .
- Clausen , J. 1955 . Visual Sensations (Phosphenes) Produced by AC Sine Wave Stimulation , Copenhagen : Ejnar Munksgaard .
- Clausen , J. and Karrer , R. 1959 . Phosphene threshold as related to age and sex . J. of Psychol , 47 : 189 – 198 .
- Clausen , J. and Karrer , R. 1961 . Electrical sensitivity of the eye in the mentally retarded . Train. Sch. Bull , 58 : 3 – 11 .
- Clausen , J. and Karrer , R. 1962 . Aftereffect of electrical stimulation to the eye . J. of Psychol , 53 : 105 – 118 .
- Schwarz , F. 1940 . Quantitative Untersuchungen ueber die optische Wirkung sinusförmiger Wechselströme . Z. Sinnesphysiol , 69 : 1 – 26 .
- Svaetichin , G. 1956 . Receptor mechanisms for flicker and fusion . Acta Physiol. Scand. , 39 ( Supplement 134 ) : 49 – 54 .