Transsituational negative contrast
نویسندگان
چکیده
منابع مشابه
Consummatory Successive Negative Contrast Induces Hypoalgesia
Aires, Ciencia y Tecnología, and by Grant 02782 from Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina, to A.E.M. The authors wish to express their thanks to Carlos Baratti and Cristina Acevedo for facilitating the use of the hot plate. María de los Angeles D ́Ambros and Pablo Gomez contributed to the training of rats for this experiment. Correspondence concerning this articl...
متن کاملHuman reaction time to negative contrast stimuli.
Simple motor reaction time (RT) to 100 percent negative contrast stimuli was measured for various background luminances as well as after bleaching a fraction of retinal photopigments. RT decreased to asymptotical value with the increase of background intensity. The intensity-dependent portion of RT behaved identically for 100 percent positive and negative contrast. Moreover, RT to 100 percent n...
متن کاملNegative anticipatory contrast and preference conditioning: flavor cues support preference conditioning, and environmental cues support contrast.
In 2 experiments, access to a 0.15% saccharin solution was followed on alternating days by access to a 32% sucrose solution and the same saccharin solution. In Experiment 1, rats increased both intake of and preference for a flavored saccharin solution that predicted sucrose, but neither effect was found using a predictive odor cue alone. Experiment 2 replicated the predictive flavor results bu...
متن کاملDual Contrast Method for Cellular MRI using Positive and Negative Contrast Agents
Introduction: MR contrast agents (CAs) are important elements for cellular MRI. Gadolinium (Gd) chelates are used in T1-weighted production of positive signal contrast while superparamagnetic iron oxide particles (SPIOs) produce T2-weighted signal reduction. Although SPIOs provide more sensitivity toward cell labeling compared to Gd-chelates, the negative contrast generated by the SPIOs may be ...
متن کاملOpioid receptors modulate recovery from consummatory successive negative contrast.
Three experiments explored the role of the opioid system in consummatory successive negative contrast. In Experiment 1, rats treated with the nonspecific opioid-receptor antagonist naloxone (2mg/kg) exhibited increased suppression after a shift from 32% to 6% sucrose solution (32-->6), relative to 6-->6 unshifted controls. A similar but shorter effect was observed with the delta-opioid receptor...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Animal Learning & Behavior
سال: 1976
ISSN: 0090-4996,1532-5830
DOI: 10.3758/bf03211985