28th International Congress of Psychology August 8 ... - U-netSURF

To elucidate the neurobehavioral effects of low-volume toluene, fifty rats were injected with 12.5,
25, and 50mg/kg toluene up to sixty times and the performance of duration discrimination was
examined. When a 2-s or an 8-s tone signal was presented, the rats were required to press one
lever or the other lever in an operant chamber to receive a food reward. Neither response provided
a reward if one of five intermediate signals with 2.5, 3.2, 4, 5, and 6.3-s durations was presented.
Low-volume toluene of 12.5-50mg/kg had no neurobehavioral effects initially but the repeated
injections affected duration discrimination.
3078.4 The effects of activation of the auditory thalamus and cortex on the startle reflex are
regulated by glutamate and GABAB receptors in the lateral amygdala, Shuchang He, Juan
Huang, Xihong Wu, Liang Li, Peking University, China
The lateral amygdala (LA) mediates auditory fear potentiation of startle. Here, electrical
stimulation of the auditory thalamus (medial geniculate nucleus, MGN), but not auditory cortex
(TE3), enhanced hind-limb startle-like EMG responses to electrical stimulation of the trigeminal
nucleus in anesthetized rats. This enhancement was decreased by bilateral injection of the
glutamate antagonist, kynurenic acid, into the LA, but increased by injection of the GABAB
antagonist, phaclofen. The GABAB receptor block also enhanced EMG responses to paired
trigeminal/TE3 stimulation. These results suggest that the effect of auditory inputs to the LA on
startle is mediated by both glutamate and GABAB receptors.
3078.5 Morphine induces conditioned pecking behavior in newly hatched chicks, Jie Liu, Lin
Xiao, Nan Sui, Institute of Psychology, Chinese Academy of Sciences, China
A set of experiments is done to tailor well-established behavior paradigm of conditioned place
preference (CPP) to newly hatched chicks. The procedure is analogous to that of CPP and
originality lies in, for morphine-treated group, a string of red beads is paired with drug and blue
beads with saline during six training trials. Results demonstrated that, compared with control
group, morphine-treated group showed significant conditioned pecking behavior toward
reward-relating red beads; and therefore confirmed the establishment of preference for red beads,
suggesting an avian model might be ideal in studying cue-elicited drug conditioning with respect
to color visual cues.
3079 ORAL
Human development
Chair: Yanjie Su, China
3079.1 A hundred cases analyse of children curiosity, Yin Yuan, China
The purpose of the present study was to document the children curiosity development and
manifestation. The researcher selected a hundred and thirty-five children curiosity cases in the
preschool setting and employ event sampling method to coding and make statistics analyses. The
children were four, five and six years old. The findings indicated that the children curiosity
displayed through observation activity, making activity and experiment activity. And children
curiosity explicit behaviour showed that mind attention, put questions in language, quick and
continued reaction, explore activity.
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