Factors forming the edge of a receptive field: the presence of relatively ineffective afferent terminals.

@article{Merrill1972FactorsFT,
  title={Factors forming the edge of a receptive field: the presence of relatively ineffective afferent terminals.},
  author={E. G. Merrill and Patrick D. Wall},
  journal={The Journal of physiology},
  year={1972},
  volume={226 3},
  pages={
          825-46
        }
}
A specialized type of spinal cord cell has its cell body in lamina IV and has a small low threshold cutaneous receptive field which is remarkable for its abrupt edge. No signs could be found of a subliminal fringe to this field since its size remains fixed during wide excursions of the cell's excitability. Reversible blocking of peripheral nerves and dorsal roots showed that the afferents responsible for exciting these cells following natural stimuli, run in a restricted area of peripheral… CONTINUE READING

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