Table 4. Results of penile electrophysiological finding.
| Author | Potential type | Protocol | Stimulation location | IELT criteria | Result |
|---|---|---|---|---|---|
| Xia et al. (60) | GPSEP; DNSEP | 1.0 ms at 3 Hz; 10.0 mA for stimulation; ascending descending to minimal perception for threshold | Subcoronal—DN; glans penis—GP |
<1 m or 30 s in PE; >3 m in control | DNSEP and GPSEP indicated hyposensitivity after topical anesthesia in both Potent and PE subject |
| Xia et al. (61) | GPSEP; DNSEP | 1.0 ms at 3 Hz; 10.0 mA for stimulation; ascending descending to minimal perception for threshold | Subcoronal—DN; glans penis—GP |
<3m in PE | GNSPE latency prolonged with IELT prolongation after circumference |
| Xin et al. (64) | DNSEP; GPSEP | 0.05 ms at 3 Hz; from 0 to 80 to 100 V | DN—penile shaft; GP—glans penis |
Not given | PE patients showed higher DN-GN-SEP amplitude |
| Yilmaz et al. (65) | Cortical SEP; sacral ER | 0.2 ms at 2 Hz; ascending descending to minimal perception | DN-GP—subcoronal region and shaft | Not given | No different SEP and latency change while IELT and penile sensory threshold elevated |
| Zhou et al. (66) | BCR | Rectangular pulses; 0.04 ms at 3 Hz glans penis sensitivity; 0.2 ms at 1 Hz for BCR; Ascending descending to minimal perception |
Glans penis (with authors’ own patent intraurethral electrode) | <1 m in PE; >4 m in control |
Lower BCR sensory threshold in PE |
| Fanciullacc et al. (67) | Cortical SEP | 0.2 ms at 3 Hz | Genital area | Not given | True PE manifested higher SEP representative from genital area |
| Yang et al. (68) | DNSEP; GPSEP; PSSR |
1.0 ms at 3 Hz; ascending descending to minimal perception for threshold | Subcoronal—DN; glans penis—GP |
<2 m in PE | PE patient with shorter latency than potent subjects |
| Xin et al. (70) | DNSEP; GNSEP | 0.05 ms at 3 Hz; from 0 to 80 to 100 V | DN—penile shaft; GP—glans penis |
Not given | Prolong SEP latency and elevated amplitudes after PE treated topical anesthesia |
| Perreti et al. (71) | DNSEP; GPSEP; BCR; MEP |
Rectangular pulses; 0.2 ms at 1 Hz | DN—penile shaft; GP—glans penis; BC—base of penis |
<3 min | No different SEP nor BCR between PE and potent |
| Xia et al. (72) | GPSEP; DNSEP | 1.0 ms at 3 Hz; 10.0 mA for stimulation; ascending descending to minimal perception for threshold | Subcoronal—DN; glans penis—GP |
>20 m in DE; <5 m in control |
DP patients showed higher sensory threshold and longer DNSPE |
PE, premature ejaculation; DE, delayed ejaculation; MEP, motor evoked potential; Sacral ER, sacral evoked response; PSSR, penile sympathetic skin response; DN, dorsal nerve; GP, glans penis.