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Evoked Potentials in Psychology, Sensory Physiology and Clinical Medicine (Paperback, Softcover reprint of the original 1st ed. 1972)
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Evoked Potentials in Psychology, Sensory Physiology and Clinical Medicine (Paperback, Softcover reprint of the original 1st ed. 1972)
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Only quite recently has it become technically possible to record,
from elec trodes attached to the scalp, the human brain's
electrical responses to sensory stimulation. The core of this book
is a critical survey of endeavours to use these electrical
responses (called evoked potentials) as tools in attempts to
discover the ways in which the brain first processes incoming
sensory information and then forms internal representations of
features ofthe external world. Buttressed by quantities of
undeniably sloppy evoked potential research there are some who
would dismiss out of hand the recording of evoked potentials as
being comparable to 'holding an oscilloscope probe 6 feet in
diameter up to a computer and pronouncing from the resultant
waveform on the underlying structure and function'; many would
contrast the scientific value of recording the activities of single
nerve cells with microelectrodes. However, although it is certainly
true that the brain may indeed function in a way which would not be
susceptible to the approaches of the evoked potential researcher it
might equally well resist the stratagems of the single-cell man.
If, for example, the neural correlate of some sensation were the
state of some large population of nerve cells, then the present-day
researcher who records in great detail the activity of one single
cell or of a very few cells would be faced with a major problem in
trying to see the forest for the trees."
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