全文获取类型
收费全文 | 8574篇 |
免费 | 402篇 |
国内免费 | 2篇 |
出版年
2023年 | 66篇 |
2022年 | 64篇 |
2021年 | 99篇 |
2020年 | 149篇 |
2019年 | 161篇 |
2018年 | 249篇 |
2017年 | 255篇 |
2016年 | 237篇 |
2015年 | 178篇 |
2014年 | 203篇 |
2013年 | 851篇 |
2012年 | 411篇 |
2011年 | 450篇 |
2010年 | 270篇 |
2009年 | 175篇 |
2008年 | 347篇 |
2007年 | 285篇 |
2006年 | 288篇 |
2005年 | 180篇 |
2004年 | 175篇 |
2003年 | 155篇 |
2002年 | 158篇 |
2001年 | 217篇 |
2000年 | 223篇 |
1999年 | 171篇 |
1998年 | 64篇 |
1993年 | 59篇 |
1992年 | 117篇 |
1991年 | 116篇 |
1990年 | 117篇 |
1989年 | 101篇 |
1988年 | 94篇 |
1987年 | 98篇 |
1986年 | 99篇 |
1985年 | 106篇 |
1984年 | 91篇 |
1983年 | 72篇 |
1981年 | 57篇 |
1979年 | 109篇 |
1978年 | 59篇 |
1976年 | 61篇 |
1975年 | 77篇 |
1974年 | 104篇 |
1973年 | 92篇 |
1972年 | 75篇 |
1971年 | 80篇 |
1970年 | 76篇 |
1969年 | 82篇 |
1968年 | 77篇 |
1967年 | 88篇 |
排序方式: 共有8978条查询结果,搜索用时 0 毫秒
841.
842.
843.
844.
845.
846.
847.
848.
849.
Torsional eye movements are triggered by head tilt and a rotating visual field. We examined whether attention to a misoriented
form could also induce torsion. Thirty-six observers viewed an adapting field containing a bright vertical Une, and then they
viewed a display that was composed of two misoriented words (one rotated clockwise, the other counterclockwise, by 15°, 30°,
or 45°). The subjects were instructed to attend to one of the words. The subjects’ adjustments of a reference line to match
the tilt of the afterimage showed that attention to a misoriented word produces torsional eye movement (verified with direct
measurements on 4 additional subjects). This eye movement reduces the retinal misorientation of the word by about 1°. The
results of this study reinforce the linkage between selective attention and eye movements and may provide a useful tool for
dissecting different forms of “mental rotation” and other adjustments in internal reference frames. Apparent-motion displays
confirming that the eye rotated in the head may be downloaded from www.psychonomic.org/archive. 相似文献
850.
The “prawn-in-the-tube” procedure in the cuttlefish: Habituation or passive avoidance learning?
下载免费PDF全文
![点击此处可从《Learning & memory (Cold Spring Harbor, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Agin V Chichery R Dickel L Chichery MP 《Learning & memory (Cold Spring Harbor, N.Y.)》2006,13(1):97-101
This study examines whether or not habituation contributes to the regulation of the inhibition of predatory behavior observed during the "prawn-in-the-tube" training procedure. When presented with prawns that are visible behind glass but untouchable, cuttlefish promptly learn to inhibit their capture attempts. The first three experiments demonstrated that the acquired response in the course of training cannot be dishabituated. The fourth experiment demonstrated that the repeated application of a brief visual prawn stimulus, one that is terminated before the cuttlefish can strike, decreases attack latencies. Taken together, the results of this study establish that habituation does not play a significant role in this learning task. In fact, the present findings strengthen the results of previous studies suggesting that passive avoidance learning contributes to the regulation of the inhibition of predatory behavior. 相似文献