A4 Amacrine

References

• Postsynaptic connections (Input)
  • Flat cone bipolars which branch in sublamina A of the IPL (Kolb, 1979)
  • cb2 bipolar cells (Kolb and Nelson, 1984)
  • Large input from Amacrine cells (Kolb, 1979)

• Presynaptic connections (Output)
  • cb2 bipolar cells (Kolb and Nelson, 1984)
  • Off-center ganglion cells (Kolb, 1979), though Kolb & Nelson (1993) do not list the A4 among the amacrine inputs to the Off-Beta/x or the Off-Alpha.

• Function
  • Kolb and Nelson, 1984
    • Hyperpolarizes to light
    • No surround.
    • Very narrow receptive field
    • "likely providing centre input like that of the hyperpolarizing cone bipolar"

• Morphology
  • Pourcho and Goebel, 1985
    • Narrow field
    • more bulbous dendrites than a3

• Array characteristics

• Compartmental Model Characteristics

• Location
  • broadly stratified in strata 2 and 3 of the IPL (Vaney, 1990)

• Subclasses

• Synapse types

• Synapse Receptors

• Neurotransmitters
  • Mderately accumulates glycine (Pourcho and Goebel, 1985)

• Immunoreactivity

• Nomenclature
  • A3 may be the same as A4 Marc (1989) as cited in Vaney '90

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