protocol_27
Protocol_27.m - Screen protocol 2 - updated 10th March 2025 Based on protocol 24 Includes: - off background interval - pattern 47 - 60 deg gratings - 2 speeds - thin non50:50 bars - 2 speeds - curtains - fast - on / off - 32px not 16 px - reverse phi - 2 speeds - flicker - 1 speed - stationary grating pattern - 60 deg - stationary bar - on - phototaxis - 32px - shifted centre of rotation - 60 deg - 0.8 20s interval 30s trial duration - 2x trials stationary bars = 60s only one position
Protocol Parameters
| Parameter | Value |
|---|---|
| Conditions | 12 |
| Patterns Used | 12 |
| t_acclim_start | 300s |
| t_acclim_end | 30s |
| t_interval | 20s |
| t_flash | 5s |
| t_pause | 0.01 |
Conditions
| # | Pattern | Speed | Duration | Description |
|---|---|---|---|---|
| 1 | Pattern 9 | 127 | 15s | 60 deg gratings - 4Hz - 1 px step pattern |
| 2 | Pattern 27 | 127 | 15s | 60 deg gratings - 8Hz - 2px step pattern |
| 3 | Pattern 17 | 127 | 15s | 2:14 ON bars - 4Hz |
| 4 | Pattern 24 | 127 | 15s | 2:14 OFF bars - 4Hz |
| 5 | Pattern 51 | 127 | 15s | ON curtains - 8Hz - 32 px |
| 6 | Pattern 52 | 127 | 15s | OFF curtains - 8Hz - 32 px |
| 7 | Pattern 60 | 32 | 15s | Reverse Phi - 16px bar - 8px step |
| 8 | Pattern 60 | 64 | 15s | Reverse Phi - 16px bar - 8px step |
| 9 | Pattern 10 | 8 | 15s | Flicker - 4Hz |
| 10 | Pattern 10 | 0 | 15s | static grating - 60deg |
| 11 | Pattern 21 | 127 | 15s | shifted centre of rotation - 60deg - 0.8 |
| 12 | Pattern 57 | 1 | 45s | bar fixation - 32px ON - single bar |
Pattern Previews
Pattern 9
![]()
Pattern 10
![]()
Pattern 17

Pattern 21

Pattern 24

Pattern 27
![]()
Pattern 47

Pattern 51

Pattern 52

Pattern 57

Pattern 60
