Biomaterial Database

Development of vernier acuity and grating acuity in normally reared monkeys. 1992

L Kiorpes

Center for Neural Science, New York University, New York 10003.

The developmental time courses for vernier acuity and grating acuity were measured longitudinally in infant Macaca nemestrina monkeys. Behavioral measurements of vernier and grating acuity were made at regular intervals during development. Near birth, grating acuity is relatively more mature than vernier acuity. The proportional rate of vernier acuity development is faster than that for grating acuity. During the course of development, grating acuity improves approximately 15-fold whereas vernier acuity improves about 60-fold. Both visual functions approach adult levels at about the same age, around 40 weeks postnatally. Although grating acuity develops about four times faster in monkeys than in humans, vernier acuity development in monkeys and humans does not appear to reflect the same relationship. Adult levels of vernier acuity for the monkeys are about a factor of 2 poorer than are typically reported for humans. The differential development of vernier acuity and grating acuity does not necessarily reflect development at different levels of the visual system.

UI	MeSH Term	Description	Entries
D008254	Macaca nemestrina	A species of the genus MACACA which inhabits Malaya, Sumatra, and Borneo. It is one of the most arboreal species of Macaca. The tail is short and untwisted.	M. leonina,Macaca nemestrina leonina,Macaca nemestrina pagensis,Macaca nemestrina siberu,Macaca siberu,Monkey, Pig-Tailed,Pagai Macaque,Pig-Tail Macaque,Pig-Tailed Macaque,Pig-Tailed Monkey,M. pagensis,Macaca pagensis,Monkey, Pigtail,Monkey, Pigtailed,Pigtail Macaque,Macaque, Pagai,Macaque, Pig-Tail,Macaque, Pig-Tailed,Macaque, Pigtail,Monkey, Pig Tailed,Pagai Macaques,Pig Tail Macaque,Pig Tailed Macaque,Pig Tailed Monkey,Pig-Tail Macaques,Pig-Tailed Macaques,Pig-Tailed Monkeys,Pigtail Macaques,Pigtail Monkey,Pigtail Monkeys,Pigtailed Monkey,Pigtailed Monkeys
D009799	Ocular Physiological Phenomena	Processes and properties of the EYE as a whole or of any of its parts.	Ocular Physiologic Processes,Ocular Physiological Processes,Ocular Physiology,Eye Physiology,Ocular Physiologic Process,Ocular Physiological Concepts,Ocular Physiological Phenomenon,Ocular Physiological Process,Physiology of the Eye,Physiology, Ocular,Visual Physiology,Concept, Ocular Physiological,Concepts, Ocular Physiological,Ocular Physiological Concept,Phenomena, Ocular Physiological,Phenomenon, Ocular Physiological,Physiologic Process, Ocular,Physiologic Processes, Ocular,Physiological Concept, Ocular,Physiological Concepts, Ocular,Physiological Process, Ocular,Physiological Processes, Ocular,Physiology, Eye,Physiology, Visual,Process, Ocular Physiologic,Process, Ocular Physiological,Processes, Ocular Physiologic,Processes, Ocular Physiological
D000375	Aging	The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.	Senescence,Aging, Biological,Biological Aging
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013028	Space Perception	The awareness of the spatial properties of objects; includes physical space.	Perception, Space,Perceptions, Space,Space Perceptions
D014792	Visual Acuity	Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.	Acuities, Visual,Acuity, Visual,Visual Acuities