| liver neoplasms, experimental | Experimentally induced tumours of the liver. (12 Dec 1998) |
|---|---|
| auditory perception | The process whereby auditory stimuli are selected, organised and interpreted by the organism; includes speech discrimination. (12 Dec 1998) |
| visual perception | The selecting and organizing of visual stimuli based on the individual's past experience. (12 Dec 1998) |
| perception | <psychology> The conscious mental registration of a sensory stimulus. Origin: L. Percipere = to take in completely (18 Nov 1997) |
| gradient perception | <cell biology> Problem faced by a cell that is to respond directionally to a gradient of, for example: a diffusible attractant chemical. In a spatial mechanism the cell would compare receptor occupancy at different sites on the cell surface, a temporal mechanism would involve comparison of concentrations at different times, the cell moving randomly between readings. In pseudospatial sensing, the cell would detect the gradient as a consequence of positive feedback to protrusive activity if receptor occupancy increased with time as the protrusion moved up gradient. Few cell types have been unambiguously shown to detect gradients. (18 Nov 1997) |
| gravity perception | Process whereby a bodily structure or organism (animal or plant) receives or detects a gravity stimulus. The sensing may be direct or indirect and may or may not initiate a reaction to the stimulus. (12 Dec 1998) |
| weight perception | Recognition and discrimination of the heaviness of a lifted object. (12 Dec 1998) |
| colour perception | The visual awareness of any particular hue or achromatic colour. (12 Dec 1998) |
| pitch perception | A dimension of auditory sensation varying with cycles per second of the sound stimulus. (12 Dec 1998) |
| motion perception | The real or apparent movement of objects through the visual field. (12 Dec 1998) |
| simultaneous perception | A combination of two slightly dissimilar images into a single image. (05 Mar 2000) |
| size perception | The sensory interpretation of the dimensions of objects. (12 Dec 1998) |
| social perception | The perceiving of attributes, characteristics, and behaviours of one's associates or social groups. (12 Dec 1998) |
| space perception | The awareness of the spatial properties of objects; includes physical space. (12 Dec 1998) |
| speech perception | The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes). (12 Dec 1998) |