Table 1.
Comparison between working memory and control conditions for mean LCGU rates in the caudate nuclei
| Levels | Left CN LCGU | Right CN LCGU | ||
|---|---|---|---|---|
| WORK μmol/100gm/min | CONT μmol/100gm/min | WORK μmol/100gm/min | CONT μmol/100gm/min | |
| 1 (Head) | ||||
| Dorsal | 62.35 ± 4.18* | 46.49 ± 4.75 | 63.55 ± 3.72* | 50.41 ± 4.23 |
| Central | 63.27 ± 4.24* | 48.38 ± 4.82 | 62.96 ± 6.13 | 50.76 ± 4.69 |
| Ventral | 52.37 ± 3.72 | 43.38 ± 4.23 | 51.42 ± 3.61 | 41.01 ± 4.10 |
| 2 (Head) | ||||
| Dorsal | 70.23 ± 2.971-165 | 52.21 ± 3.37 | 70.28 ± 3.271-165 | 51.47 ± 3.72 |
| Central | 68.00 ± 3.191-165 | 51.94 ± 3.63 | 68.86 ± 3.691-160 | 50.74 ± 4.19 |
| Ventral | 56.02 ± 2.401-160 | 44.31 ± 2.73 | 56.26 ± 2.991-160 | 41.57 ± 3.39 |
| 3 (Head) | ||||
| Dorsal | 70.90 ± 3.51* | 55.98 ± 4.30 | 70.50 ± 2.85* | 59.09 ± 3.49 |
| Central | 72.75 ± 3.79* | 59.76 ± 4.64 | 72.72 ± 3.30* | 60.51 ± 4.04 |
| Ventral | 64.69 ± 3.39* | 52.66 ± 4.15 | 63.34 ± 3.28 | 54.48 ± 4.02 |
| 4 (Head/body) | ||||
| Dorsal | 71.31 ± 5.86 | 59.60 ± 7.41 | 72.64 ± 5.70 | 57.40 ± 7.23 |
| Central | 74.32 ± 5.98 | 64.09 ± 7.57 | 74.85 ± 5.55 | 61.13 ± 7.04 |
| Ventral | 59.75 ± 5.03 | 51.03 ± 5.23 | 60.20 ± 4.89 | 50.77 ± 5.69 |
| 5 (Body) | ||||
| Dorsal | 71.25 ± 4.53 | 61.75 ± 5.74 | 71.74 ± 4.04 | 60.85 ± 4.66 |
| Central | 78.25 ± 4.01 | 68.24 ± 5.08 | 77.89 ± 3.58* | 63.94 ± 4.14 |
| Ventral | 59.78 ± 3.11 | 56.61 ± 3.93 | 60.88 ± 2.82* | 50.47 ± 3.25 |
| 6 (Body) | 68.28 ± 3.58 | 57.96 ± 4.39 | 73.38 ± 3.02* | 60.60 ± 3.44 |
| 7 (Tail) | 60.18 ± 2.85 | 54.90 ± 3.24 | 58.10 ± 2.25 | 51.08 ± 2.75 |
The data presented here are the mean LCGU rates (expressed in μmol/100 gm/min ± SEM) in several subregions at seven different levels in the frontal plane from the rostral to the caudal parts of the left and right caudate nuclei. Level 1 is the most rostral, whereas level 7 is the most caudal. The working memory (WORK) group pooled the mean LCGU rates from the DSA and DOA groups. The control (CONT) group represents the average of the mean LCGU rates from the SMC and VD groups. Bold characters indicate statistically significant increases in mean LCGU values in the WORK condition, as compared with the CONT group (results were processed in a MANCOVA). CN, Caudate nucleus; LCGU, local cerebral glucose utilization;
p < 0.05;
F1-160: p < 0.01;
F1-165: p < 0.005.