John Dowling s "The Retina, "published in 1987, quickly became
the most widely recognized introduction to the structure and
function of retinal cells. In this Revised Edition, Dowling draws
on twenty-five years of new research to produce an
interdisciplinary synthesis focused on how retinal function
contributes to our understanding of brain mechanisms.
The retina is a part of the brain pushed out into the eye during
development. It retains many characteristics of other brain regions
and hence has yielded significant insights on brain mechanisms.
Visual processing begins there as a result of neuronal interactions
in two synaptic layers that initiate an analysis of space, color,
and movement. In humans, visual signals from 126 million
photoreceptors funnel down to one million ganglion cells that
convey at least a dozen representations of a visual scene to higher
brain regions.
The Revised Edition calls attention to general principles
applicable to all vertebrate retinas, while showing how the visual
needs of different animals are reflected in their retinal
variations. It includes completely new chapters on color vision and
retinal degenerations and genetics, as well as sections on retinal
development and visual pigment biochemistry, and presents the
latest knowledge and theories on how the retina is organized
anatomically, physiologically, and pharmacologically.
The clarity of writing and illustration that made "The Retina
"a book of choice for a quarter century among graduate students,
postdoctoral fellows, vision researchers, and teachers of
upper-level courses on vision is retained in Dowling s new
easy-to-read Revised Edition.
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