Biomaterial Database

Photopic and scotopic flicker sensitivity of a rod monochromat. 1981

B C Skottun, and K Nordby, and S Magnussen

The sensitivity to sine-wave flicker of a rod monochromat was compared with that of a normal subject at photopic and scotopic levels of luminance. The sensitivity of the rod monochromat in the low-frequency region (below 3 Hz at scotopic levels and below 12 to 14 Hz at photopic levels) was found to be superior to that of the control. This superiority was most pronounced at photopic levels, where the rod monochromat frequently showed a two-peak sensitivity curve.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009759	Nystagmus, Pathologic	Involuntary movements of the eye that are divided into two types, jerk and pendular. Jerk nystagmus has a slow phase in one direction followed by a corrective fast phase in the opposite direction, and is usually caused by central or peripheral vestibular dysfunction. Pendular nystagmus features oscillations that are of equal velocity in both directions and this condition is often associated with visual loss early in life. (Adams et al., Principles of Neurology, 6th ed, p272)	Convergence Nystagmus,Horizontal Nystagmus,Jerk Nystagmus,Pendular Nystagmus,Periodic Alternating Nystagmus,Rotary Nystagmus,See-Saw Nystagmus,Vertical Nystagmus,Conjugate Nystagmus,Dissociated Nystagmus,Fatigable Positional Nystagmus,Multidirectional Nystagmus,Non-Fatigable Positional Nystagmus,Permanent Nystagmus,Rebound Nystagmus,Retraction Nystagmus,Rotational Nystagmus,Spontaneous Ocular Nystagmus,Symptomatic Nystagmus,Temporary Nystagmus,Unidirectional Nystagmus,Non Fatigable Positional Nystagmus,Nystagmus, Conjugate,Nystagmus, Convergence,Nystagmus, Dissociated,Nystagmus, Fatigable Positional,Nystagmus, Horizontal,Nystagmus, Jerk,Nystagmus, Multidirectional,Nystagmus, Non-Fatigable Positional,Nystagmus, Pendular,Nystagmus, Periodic Alternating,Nystagmus, Permanent,Nystagmus, Rebound,Nystagmus, Retraction,Nystagmus, Rotary,Nystagmus, Rotational,Nystagmus, See-Saw,Nystagmus, Spontaneous Ocular,Nystagmus, Symptomatic,Nystagmus, Temporary,Nystagmus, Unidirectional,Nystagmus, Vertical,Ocular Nystagmus, Spontaneous,Pathologic Nystagmus,Positional Nystagmus, Non-Fatigable,See Saw Nystagmus
D003117	Color Vision Defects	Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the ROD OPSINS genes (on X CHROMOSOME and CHROMOSOME 3) that code the photopigments for red, green and blue.	Achromatopsia,Color Blindness,Monochromatopsia,Color Blindness, Acquired,Color Blindness, Blue,Color Blindness, Green,Color Blindness, Inherited,Color Blindness, Red,Color Blindness, Red-Green,Color Vision Deficiency,Deutan Defect,Protan Defect,Tritan Defect,Achromatopsias,Acquired Color Blindness,Blindness, Color,Blue Color Blindness,Color Blindness, Red Green,Color Vision Defect,Color Vision Deficiencies,Defect, Color Vision,Defect, Deutan,Defects, Color Vision,Deficiencies, Color Vision,Deficiency, Color Vision,Green Color Blindness,Inherited Color Blindness,Red Color Blindness,Red-Green Color Blindness,Vision Defect, Color,Vision Defects, Color,Vision Deficiencies, Color,Vision Deficiency, Color
D005425	Flicker Fusion	The point or frequency at which all flicker of an intermittent light stimulus disappears.	Flicker Fusions,Fusion, Flicker,Fusions, Flicker
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D012607	Scotoma	A localized defect in the visual field bordered by an area of normal vision. This occurs with a variety of EYE DISEASES (e.g., RETINAL DISEASES and GLAUCOMA); OPTIC NERVE DISEASES, and other conditions.	Scotoma, Arcuate,Scotoma, Bjerrum,Scotoma, Central,Scotoma, Centrocecal,Scotoma, Altitudinal,Scotoma, Paracecal,Scotoma, Paracentral,Scotoma, Peripheral,Scotoma, Ring,Scotoma, Scintillating,Scotoma, Sector,Altitudinal Scotoma,Altitudinal Scotomas,Arcuate Scotoma,Arcuate Scotomas,Bjerrum Scotoma,Bjerrum Scotomas,Central Scotoma,Central Scotomas,Centrocecal Scotoma,Centrocecal Scotomas,Paracecal Scotoma,Paracecal Scotomas,Paracentral Scotoma,Paracentral Scotomas,Peripheral Scotoma,Peripheral Scotomas,Ring Scotoma,Ring Scotomas,Scintillating Scotoma,Scintillating Scotomas,Scotomas,Scotomas, Altitudinal,Scotomas, Arcuate,Scotomas, Bjerrum,Scotomas, Central,Scotomas, Centrocecal,Scotomas, Paracecal,Scotomas, Paracentral,Scotomas, Peripheral,Scotomas, Ring,Scotomas, Scintillating,Scotomas, Sector,Sector Scotoma,Sector Scotomas
D014787	Vision Tests	A series of tests used to assess various functions of the eyes.	Test, Vision,Tests, Vision,Vision Test