Table 1.
Average head, pinna dimensions and associated weights in the developing guinea pig.
| Age | Head Diameter, AB (mm) |
Interaural Distance, A’B’ (mm) |
Pinna Height, CD (mm) |
Pinna Width, EF (mm) |
Effective Pinna Diameter, ED (mm) |
Weight (kg) |
|---|---|---|---|---|---|---|
| P0 | 21.85±2.9 (n=22) | 24.02±0.91 (n=6) | 19.3±1.9 (n=11) | 15.74±1.76 (n=11) | 18.4±2.4 (n=16) | 0.09±0.03 (n=23) |
| P7 | 25.85±3.03 (n=18) | 25.94±1.87 (n=3) | 21.84±1.51 (n=13) | 20.3±3.16 (n=13) | 20.99±1.64 (n=13) | 0.14±0.05 (n=18) |
| P14 | 27.14±2.56 (n=15) | 27.4±2.3 (n=4) | 24.25±1.19 (n=11) | 20.20±1.06 (n=11) | 21.78±0.98 (n=11) | 0.19±0.06 (n=15) |
| P28 | 32.17±1.62 (n=19) | 29.83±0.86 (n=3) | 25.67±1.56 (n=11) | 21.57±0.93 (n=11) | 23.21±1.06 (n=15) | 0.31±0.06 (n=23) |
| P42 | 34.83±1.29 (n=12) | 30.85±0.48 (n=3) | 27.54±3.21 (n=13) | 22.33±1.18 (n=13) | 23.54±1.34 (n=12) | 0.4±0.05 (n=12) |
| P56 | 37.95±1.66 (n=17) | 35.27±1.55 (n=4) | 27.11±2.47 (n=14) | 22.28±1.01 (n=14) | 25.72±1.33 (n=11) | 0.51±0.07 (n=20) |
| >P70 | 40.91±2.07 (n=16) | 34.1±2.43 (n=17) | 30.47±2.44 (n=13) | 21.85±2.9 (n=22) | 27.76±1.48 (n=10) | 0.67±0.13 (n=20) |
Values are listed as the average ± standard deviation.