PROCESSING OF DIRECTION AND MAGNITUDE BY THE SACCADIC EYE-MOVEMENT SYSTEM

被引:40
作者
HOU, RL [1 ]
FENDER, DH [1 ]
机构
[1] CALTECH,PASADENA,CA 91125
基金
美国国家卫生研究院;
关键词
D O I
10.1016/0042-6989(79)90217-7
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The function of the saccadic programming system has been studied using a doublestep target movement in two dimensions. The results of these experiments suggest the following hypotheses. The information processing in the programming of a saccade consists of direction computation and magnitude computation. If the new target-step arrives before the direction computation of the previous saccade is complete, this saccade will be cancelled. The partial program concerning the direction of the saccade is kept in a buffer memory: if the direction of the new saccade is not in a direction similar to the old one, this partial program has to be erased, which takes an extra 40-80 msec of processing time. There is a stage in which the direction of the saccade cannot be reprogrammed but the magnitude can still be reduced. In other words, the magnitude computation seems to finish after the direction computation. If the new target-step arrives after the computation of both direction and magnitude are complete, two full saccades will be observed. © 1979.
引用
收藏
页码:1421 / 1426
页数:6
相关论文
共 9 条
[1]   FURTHER PROPERTIES OF HUMAN SACCADIC SYSTEM - EYE MOVEMENTS AND CORRECTION SACCADES WITH AND WITHOUT VISUAL FIXATION POINTS [J].
BECKER, W ;
FUCHS, AF .
VISION RESEARCH, 1969, 9 (10) :1247-&
[2]  
Becker W., 1975, BASIC MECH OCULAR MO, P519
[3]   SACCADIC EYE-MOVEMENT LATENCIES TO MULTIMODAL STIMULI - INTERSUBJECT VARIABILITY AND TEMPORAL EFFICIENCY [J].
CARLOW, T ;
DELLOSSO, LF ;
TROOST, BT ;
DAROFF, RB ;
BIRKETT, JE .
VISION RESEARCH, 1975, 15 (11) :1257-1262
[4]   INTERACTIONS OF HORIZONTAL AND VERTICAL HUMAN OCULOMOTOR SYSTEMS - SACCADIC SYSTEMS [J].
FEINSTEIN, R ;
WILLIAMS, WJ .
VISION RESEARCH, 1972, 12 (01) :33-+
[5]   SOME OBSERVATIONS CONCERNING SACCADIC EYE-MOVEMENTS [J].
KOMODA, MK ;
FESTINGER, L ;
PHILLIPS, LJ ;
DUCKMAN, RH ;
YOUNG, RA .
VISION RESEARCH, 1973, 13 (06) :1009-1020
[6]   EFFECT OF MEAN REACTION-TIME ON SACCADIC RESPONSES TO 2-STEP STIMULI WITH HORIZONTAL AND VERTICAL COMPONENTS [J].
LISBERGER, SG ;
FUCHS, AF ;
KING, WM ;
EVINGER, LC .
VISION RESEARCH, 1975, 15 (8-9) :1021-1025
[7]   NONLINEARITIES OF HUMAN OCULOMOTOR SYSTEM - GAIN [J].
STCYR, GJ ;
FENDER, DH .
VISION RESEARCH, 1969, 9 (10) :1235-+
[8]  
WESTHEIMER G, 1954, AMA ARCH OPHTHALMOL, V52, P710
[9]   EYE-MOVEMENT RESPONSES TO STEP AND PULSE-STEP STIMULI [J].
WHEELESS, LL ;
BOYNTON, RM ;
COHEN, GH .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1966, 56 (07) :956-&