Table 2.
EBC paradigms and measurement techniques for studies of EBC in schizophrenia.
| Study | Procedure type | Method of eyeblink activity measurement |
|---|---|---|
| Taylor and Spence (54) | Single-cue visual delay EBC | Microtorque potentiometer mounted to lever attached to upper eyelid and polygraph recording eyelid position (69) |
| O’Connor and Rawnsley (55) | Single-cue auditory delay EBC | Light source and photoelectric cell |
| Spain (56) | Combined visual and auditory delay (presented as 50 trials of each, order counterbalanced) | |
| Auditory | Auditory delay EBC | Electrodes placed above and below the eye; similar to electrooculography |
| Visual | Visual delay EBC | Electrodes placed above and below the eye; similar to electrooculography |
| Sears et al. (57) | Single-cue auditory delay EBC | Infrared photobeam |
| Hofer et al. (58) | Delay eyelid conditional discrimination learning | Photocell that measured “area of the eye covered by the eyelid” (via “light reflected from the cornea”) |
| Stevens et al. (59) | Discrimination auditory delay EBC | – |
| Marenco et al. (60) | ||
| Trace | Single-cue auditory trace EBC | “Potentiometer attached to the eyelid” |
| Delay | Single-cue auditory delay EBC | “Potentiometer attached to the eyelid” |
| Brown et al. (61) | Single-cue auditory delay EBC | EMG electrodes |
| Edwards et al. (62) | Single-cue auditory delay EBC | EMG electrodes |
| Bolbecker et al. (63) | Single-cue auditory delay EBC | EMG electrodes |
| Bolbecker et al. (64) | ISI-shift single-cue auditory delay EBC | EMG electrodes |
| Forsyth et al. (65) | Single-cue auditory delay EBC | EMG electrodes |
| Parker et al. (66) | Single-cue auditory delay EBC | Infrared photo beam |
| Bolbecker et al. (67) | Single-cue auditory delay EBC | EMG electrodes |
| Coesmans et al. (68) | Single-cue auditory delay EBC | Magnetic distance measurement technique (i.e., measures distance between upper eyelid and lower eyelid) |