Table 1.

Spatial map statistics

TypeValueMean ± 95% CISD
MapSparsity0.614 ± 7.18 × 10−30.0207
Coverage0.988 ± 1.82 × 10−35.25 × 10−3
Representation4.51 ± 0.08970.259
Maximum rate0.925 ± 0.01110.0319
UnitsNumber of fields1.38 ± 0.01550.622
Coverage0.0234 ± 3.04 × 10−40.0122
Maximum rate0.418 ± 4.81 × 10−30.193
FieldsArea (cm2)169 ± 1.5673.7
Diameter (cm)a14.3 ± 0.06653.13
Peak rate0.399 ± 3.95 × 10−30.186
Average rate0.208 ± 2.35 × 10−30.111
  • “Map” values are computed across sampled maps, “Units” across active place units in sampled maps, and “Fields” across active place fields in sampled maps. Mean ± 95% confidence interval (CI) and SD describe a sample set of 32 random grid/place-network pairs.

  • aField diameter is computed from area assuming field circularity.