Abstract
Raphe magnus cells that are inhibited by skin pinching fire spontaneously with strongly preferred interspike intervals (mean cycle 85 ms, n = 33). In pentobarbital-anesthetized rats, mid-cycle cathodal activation (0.3 ms) or end-cycle anodal block (30-60 ms) at ~ 1 Hz through the extracellular recording microelectrode delayed expected spikes; respective post-stimulus latencies peaked on avarage at 1.17 (n = 14) and 0.40 (n = 6) cycles. Feedback inhibition following random excitation, but not free-running intrinsic or afferent oscillations, may therefore cause the rhythm.
Original language | English (US) |
---|---|
Pages (from-to) | 348-351 |
Number of pages | 4 |
Journal | Brain research |
Volume | 745 |
Issue number | 1-2 |
DOIs | |
State | Published - Jan 16 1997 |
Externally published | Yes |
Keywords
- Autocorrelogram
- Medulla
- Microstimulation
- Oscillation
- Pain
- Spike train
ASJC Scopus subject areas
- Neuroscience(all)