PMID-4196269[0] Operantly conditioned patterns on precentral unit activity and correlated responses in adjacent cells and contralateral muscles
- Looked at an operant task through the opposite direction: as a means for looking at reaction time, and muscle responses to trained bursts of activity.
- recorded from precentral gyrus cells in leg and arm representation.
- isonel coated tungsten microwires, with great apparent waveform records.
- also recorded EMG, nylon-insuldated stainless-steel wire, led subcutaneuosly to the head connector.
- references an even older study concerning the operant conditioning of neural activity in rats by Olds.
- really simple technology - RC filter to estimate the rate; reward high rate; resets on reward.
- the evoked operant bursts are undoubtably due to training.
- looks like it was easy for the monkeys to increase the firing rate of their cortical cells (of course, I'm just skimming the article..)
- 233 precentral units.
- which they did some preliminary somatotopic mapping of.
- neighboring cells mirrored the firing rate changes (logical as they share the local circuitry)
- in a few sessions the operant bursts were not associated with movements.
- Could individually condition cells when they happened to record 2 units on the same electrode.
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