| 释义 |
saccadic, a.|səˈkædɪk|
[f. prec. + -ic.]
1. Of the nature of or pertaining to a saccade or saccades (sense b).
1916R. Dodge in Psychol. Bull. XIII. 422 German and Scandinavian writers are commonly using the descriptive class term ‘saccadic’ to denote the rapid eye-movements for which we have only the arbitrary name of ‘type 1’. I am not sure with whom the term originated, but it seems worth adopting. Ibid. 423 He independently rediscovers and thus confirms a number of eye-movement phenomena; such as the inability to see during saccadic movements. 1940R. S. Woodworth Psychology (ed. 12) xiv. 478 The saccadic movement carries the eyes from one object to another, while the pursuit movement follows a moving object. 1948Brit. Jrnl. Psychol. XXXVIII. 144 In a task such as reading, where we wish to observe different parts of the field successively, it can be shown by photography that the eye makes jerks, or ‘saccadic movements’, having a mean duration of 0·03 to 0·05 sec. 1954A.M.A. Arch. Ophthalm. LII. 710 Most experimenters have found that all voluntary movements executed in the absence of a moving visual stimulus are saccadic. 1977Dell'Osso & Troost in Brooks & Bajandas Eye Movements 52 Saccadic palsy with normal pursuit occurs in both congenital and acquired ocular motor apraxia.
2. gen. Jerky, discontinuous.
1937Scott & Vlastos Towards Christian Revolution 247 Marxists are disposed to charge Christians with..failure to appreciate the saccadic movement of history. 1951J. S. Bruner Beyond Information Given (1974) vi. 92 The reader may object that our model of the information-confirming cycle seems too saccadic, too jumpy. 1980Times Lit. Suppl. 18 Jan. 54/2 From these things—parties, cafes, trips, gigs—a saccadic inconsequential life is made.
Hence saˈccadically adv.
1962Jrnl. Optical Soc. Amer. LII. 572/2 One can produce conditions of stimulation under which the saccadically moving eye will not be able to see as well as the fixating eye. 1964Jrnl. Physiol. CLXXIV. 259 In Fig. 11B is also shown what can never be measured in practice, the net active-state tension needed to drive the eye saccadically. 1975Nature 1 May 68/2 When the cage was rotated, the bird showed the classical optomotor response of the head: alternately stabilising in visual space and saccadically moving to a new position. |