Neuronal Population Coding of Movement Direction.

Georgopoulos, A. P., Schwartz, A. B., & Kettner, R. E. (1986). Neuronal Population Coding of Movement Direction. Science, 233(4771), 1416-1419.

Type

Journal article

Intellectual base

Primary research

Year

1986

DOI

10.1126/science.3749885

Link

https://doi.org/10.1126/science.3749885

Cited from

economics_finance, neuroscience

Cited by

2 citations across 2 artifacts.

Each citation links to the sentence it supports in the citing article.

Primes

• Population Coding
  • Neuroscience (origin) — motor cortex represents reach direction by the population vector across many directionally-tuned neurons, visual orientation by population activity in V1, head direction by ring-attractor populations; no individual neuron is precise enough, but the population is.

    This sourceIntroduces the population-vector decoding of reach direction across directionally-tuned motor-cortex neurons; the vector sum of cell vectors weighted by firing rate points in the movement direction.

• Wisdom of the Crowds
  • Neuroscience (non-obvious): Population coding reads out a percept or motor command by pooling many individually noisy neurons; the population estimate is sharper than any single neuron's firing because the independent noise across neurons averages out, a computation Georgopoulos (1986) demonstrated with population-vector decoding of arm-movement direction from motor-cortex populations.

    This sourceDemonstrates population-vector decoding: pooling many individually noisy motor-cortex neurons yields a movement-direction estimate far sharper than any single neuron's, the neural instance of crowd aggregation.

Verification

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