The role of the dorsal striatum and dorsal hippocampus in probabilistic and deterministic odor discrimination tasks

Three experiments explored the contribution of the cortico-striatal system and the hippocampus system to the acquisition of solutions to simultaneous instrumental odor discriminations. Inactivation of the dorsal striatum after rats had reached criterion on a three problem probabilistic set of discriminations--A (80%) vs. B (20%), C (67%) vs. D (33%), E(67%) vs. F(33%)--impaired test performance and disrupted performance when the rats were tested with novel cue combinations (C vs. F and E vs. D), where control animals chose C and F. In contrast, inactivating the dorsal hippocampus enhanced performance on this task and on a deterministic discrimination A (100%) vs. B (0%). These results are consistent with the complementary learning systems view, which assumes that the cortico-striatal and hippocampal system capture information in parallel. How this information combines to influence task performance depends on the compatibility of the content captured by each system. These results suggest that the trial-specific information captured by the hippocampal system can be incompatible with the across-trial integration of trial outcomes captured by the cortico-striatal system.     

Psychotropic placebos reduce the misinformation effect by increasing monitoring at test

A psychotropic placebo can help people resist the misinformation effect, an effect thought to be caused by a shift to more stringent source monitoring. When this shift occurs has been unclear. To address this issue we gave some people - but not others - a phoney cognitive-enhancing drug we called R273. Shortly afterwards, everyone took part in a misinformation effect experiment. To gather evidence about source monitoring we surreptitiously recorded time to read the misleading postevent narrative, and response time at test. Our findings suggest that people shifted to more stringent source monitoring at test. Moreover, people with higher working memory capacity (WMC) performed better than people with lower WMC - but only when they were told they had received R273, a finding that fits with research showing that WMC can confer advantages in situations demanding effortful control, but not when automatic heuristics suffice.     

ALL ANIMALS MATTER: MARC BEKOFF'S CONTRIBUTION TO CONSTRUCTIVE CHRISTIAN THEOLOGY

Abstract. Along with Jane Goodall, Mark Bekoff proposes that religion can join science in recognizing that animals have minds of their own; that humans can humbly imagine themselves inside these minds, all the while recognizing their independent integrity; and that, as creatures with psyches, animals deserve respect and care. In his various writings Bekoff offers many hints of what a theology of animal minds might look like and how it might be part of a more comprehensive theology of respect and care for the community of life. Process or Whiteheadian theology offers a way of appreciating Bekoff's insights, linking them with the ecojustice movement, showing how they can be linked with various themes in evolutionary biology, and developing a threefold approach to animal well‐being: cosmological, ethical, and spiritual. In so doing, process thought shows how the practice of science, particularly as expressed in cognitive theology, involves a marriage of empathy and observation, which represents science and spirituality at their best.