| dark-ground illumination | dark-field illumination |
|---|---|
| figure and ground | That aspect of perception wherein the perceived is separated into at least two parts, each with different attributes but influencing one another. Figure is the most distinct; ground the least formed; e.g., a bird or tree (figure) seen against the sky (ground). (05 Mar 2000) |
| Flechsig's ground bundles | Fasciculus anterior proprius and fasciculus lateralis proprius. See: fasciculi proprii. (05 Mar 2000) |
| lateral ground bundle | lateral ground bundle |