Table 3.
Relation between bit identity that is sent by the stimulus control computer, the event that is encoded in the events file (.nev) by the NSPs, and the trial-related event that occurred at the moment that the bit was set to ‘high’.
| Bit | NEV encoding | Interpretation | |||
|---|---|---|---|---|---|
| Resting state | SNR | RF | |||
| Cond | Description | ||||
| 0 | 1 | Sync pulse | — | — | — |
| 1 | 2 | Stimulus onset | — | Stimulus onset | |
| 2 | 4 | Stimulus offset | — | Reward delivery | |
| 3 | 8 | Reward delivery | 1 | Rightward sweeping bar | |
| 4 | 16 | — | 2 | Upward sweeping bar | |
| 5 | 32 | 3 | Leftward sweeping bar | ||
| 6 | 64 | 4 | Downward sweeping bar | ||
| 7 | 128 | — | — | ||
Note that only a single bit is activated at each point in time. The resulting decimal code is 2^N, where N is the identity of the active bit/pin.