Electrogustometric threshold, taste intensity and identification in the control and PD group
| Intensity (0–10) | Correct identification (%) | |||||
|---|---|---|---|---|---|---|
| Controls | Patients | p | Controls | Patients | p | |
| The electrogustometric threshold (μA) was 95.6 (20.0) for controls and 27.0 (6.5) for patients; p = 0.001 (significant difference). | ||||||
| Intensity ratings are expressed as means (SEM). | ||||||
| Correct identification refers to the percentage of subjects who described the control stimuli as "none", the sucrose samples as "sweet", the quinine samples as "bitter" etc. "Sweet" was assumed to be the correct answer in the case of the milk samples. | ||||||
| *Significant inter-group differences. | ||||||
| Filter paper discs | ||||||
| Neutral (water-soaked papers) | 0.5 (0.2) | 0.8 (0.2) | 0.19 | 91 | 67 | 0.42 |
| Sucrose | ||||||
| 10.0% | 3.9 (0.4) | 4.0 (0.4) | 0.96 | 85 | 83 | 0.96 |
| 25.0% | 6.3 (0.4) | 6.0 (0.5) | 0.64 | 88 | 97 | 0.79 |
| 60.0% | 7.1 (0.4) | 6.1 (0.5) | 0.11 | 94 | 93 | 0.99 |
| Quinine | ||||||
| 0.025% | 1.9 (0.4) | 3.2 (0.5)* | 0.04 | 39 | 60 | 0.34 |
| 0.1% | 6.2 (0.5) | 6.9 (0.5) | 0.30 | 94 | 93 | 0.99 |
| 0.5% | 8.3 (0.4) | 7.6 (0.5) | 0.23 | 97 | 100 | 0.93 |
| Citric acid | ||||||
| 0.25% | 2.4 (0.3) | 3.2 (0.4) | 0.11 | 64 | 73 | 0.72 |
| 1.0% | 5.6 (0.5) | 6.2 (0.4) | 0.45 | 79 | 70 | 0.76 |
| 4.0% | 8.4 (0.3) | 8.2 (0.3) | 0.33 | 91 | 83 | 0.81 |
| Sodium chloride | ||||||
| 1.25% | 3.5 (0.5) | 3.9 (0.5) | 0.54 | 64 | 67 | 0.91 |
| 5.0% | 6.1 (0.4) | 6.1 (0.4) | 0.93 | 82 | 80 | 0.95 |
| 20.0% | 8.4 (0.3) | 8.2 (0.3) | 0.80 | 91 | 90 | 0.98 |
| Liquid samples | ||||||
| Chocolate milk | 6.6 (0.3) | 6.2 (0.4) | 0.44 | 94 | 97 | 0.94 |
| Water | 0.8 (0.2) | 2.2 (0.4) | 0.06 | 85 | 90 | 0.87 |
| Vanilla milk | 6.5 (0.4) | 6.6 (0.4) | 0.93 | 100 | 100 | 1.00 |