排序方式: 共有22条查询结果,搜索用时 15 毫秒
1.
2.
MM Roozendaal De Kruijf HF RJ Reuling A Threels JJ Swarts VM Wiegant JA Mattheij 《Stress (Amsterdam, Netherlands)》1997,1(4):241-248
There is evidence that stress can alter the activity in the brain of gamma-aminobutyricacid (GABA), a neurotransmitter that has been implicated in the regulation of LH secretion. In the present study the role of GABA in the restraint stress-induced inhibition of the LH surge was investigated in the intact cyclic rat. Intracerebroventricular (icv) administration of the GABAA receptor agonist muscimol (0.1, 0.5 or 1 μg) 5 min before the presumed onset of the pro-oestrous LH surge (at 0900 h) caused a dose dependent suppression of the surge. A single dose of the GABAB receptor agonist baclofen (1 μg; icv) injected at 0855 h postponed the onset of the LH surge, and repeated injections at 0855 and 1130 h suppressed the surge. These data indicate that GABA-ergic activity in the brain can inhibit the LH surge in the cyclic rat via GABAA and GABAB receptors. Pro-oestrous rats were subjected to 5 hrs of restraint starting at 0855 h. Pretreatment with the GABAA receptor antagonist bicuculine (1 μg; icv) at 0840, 0940 and 1040 h or pretreatment with the GABAB receptor antagonist phaclofen (10 μg; icv) at 0840 h were ineffective in preventing the restraint-induced inhibition of the LH surge. The results suggest that GABAA and GABAB receptors are not involved in the inhibitory effect of restraint stress on the LH surge. 相似文献
3.
4.
5.
The present study addresses the relationship between linguistic and non-linguistic spatial representations. In three experiments
we probe spatial language and spatial memory at the same time points in the task sequence. Experiments 1 and 2 show analogous
delay-dependent biases in spatial language and spatial memory. Experiment 3 extends this correspondence, showing that additional
perceptual structure along the vertical axis reduces delay-dependent effects in both tasks. These results indicate that linguistic
and non-linguistic spatial systems depend on shared underlying representational processes. In addition, we also address how
these delay-dependent biases can arise within a single theoretical framework without positing differing prototypes for linguistic
and non-linguistic spatial systems. 相似文献
6.
Robert Ervin Cramer Ryan E. Lipinski Ashley Bowman Tanner Carollo 《Current psychology (New Brunswick, N.J.)》2009,28(1):1-11
Sex differences in subjective distress to violations of trust in a close relationship were observed among Mexican American
men and women. Imagining a partner’s emotional infidelity and other female-linked violations (for example, a partner who no
longer desires to work) distressed a larger percentage of women than men. In contrast, imagining a partner’s sexual infidelity
and other male-linked violations (for example, a partner who no longer makes an effort to look physically attractive) distressed
a larger percentage of men than women. The results from two studies provided compelling evidence against a social–cognitive
explanation of the sex differences and for an evolutionary psychology explanation based on men and women responding to threats
to their sex-linked mating strategies. 相似文献
7.
8.
Study of the phonological similarity effect (PSE) in immediate serial recall (ISR) has produced a conflicting body of results. Five experiments tested various theoretical ideas that together may help integrate these results. Experiments 1 and 2 tested alternative accounts that explain the effect of phonological similarity on item recall in terms of feature overlap, linguistic structure, or serial order. In each experiment, the participants' ISR was assessed for rhyming, alliterative, and similar nonrhyming/nonalliterative lists. The results were consistent with the predictions of the serial order account, with item recall being higher for rhyming than for alliterative lists and higher for alliterative than for similar nonrhyming/nonalliterative lists. Experiments 3 and 4 showed that these item recall differences are reduced when list items repeat across lists. Experiment 5 employed rhyming and dissimilar one-syllable and two-syllable lists to demonstrate that recall for similar (rhyming) lists can be better than that for dissimilar lists even in a typical ISR task in which words are used, providing a direct reversal of the classic PSE. These and other previously published results are interpreted and integrated within a proposed theoretical framework that offers an account of the PSE. 相似文献
9.
10.
A survey was conducted of the state policies regarding the use of restrictive/ aversive behavior modification procedures with mentally retarded persons. Policies varied substantially with respect to both scope and length; however, the overwhelming majority required that behavior modification programs be developed through the interdisciplinary planning process. No consistent pattern emerged with respect to the review and approval process for the use of aversive procedures. Approximately 75% of the states appear to permit the use of restraint as a treatment modality. Policies direct only minimal attention to the issue of training staff to implement aversive procedures. From the results of the survey, a model for the use of aversive procedures was developed and is presented. 相似文献