CS-specific gamma,theta, and alpha EEG activity detected in stimulus generalization following induction of behavioral memory by stimulation of the nucleus basalis

Tone paired with stimulation of the nucleus basalis (NB) induces behavioral memory that is specific to the frequency of the conditioned stimulus (CS), assessed by cardiac and respiration behavior during post-training stimulus generalization testing. This paper focuses on CS-specific spectral and temporal features of conditioned EEG activation. Adult male Sprague-Dawley rats, chronically implanted with a stimulating electrode in the NB and a recording electrode in the ipsilateral auditory cortex, received either tone (6kHz, 70dB, 2s) paired with co-terminating stimulation of the nucleus basalis (0.2s, 100Hz, 80-105 microA, ITI approximately 45s) or unpaired presentation of the stimuli (approximately 200 trials/day for approximately 14 days). CS-specificity was tested 24h post-training by presenting test tones to obtain generalization gradients for the EEG, heart rate, and respiration. Behavioral memory was evident in cardiac and respiratory responses that were maximal to the CS frequency of 6kHz. FFT analyses of tone-elicited changes of power in the delta, theta, alpha, beta1, beta2, and gamma bands in the paired group revealed that conditioned EEG activation (shift from lower to higher frequencies) was differentially spectrally and temporally specific: theta, and alpha to a lesser extent, decreased selectively to 6kHz during and for several seconds following tone presentation while gamma power increased transiently during and after 6kHz. Delta exhibited no CS-specificity and the beta bands showed transient specificity only after several seconds. The unpaired group exhibited neither CS-specific behavioral nor EEG effects. Thus, stimulus generalization tests reveal that conditioned EEG activation is not unitary but rather reflects CS-specificity, with band-selective markers for specific, associative neural processes in learning and memory.     

Validation of the Japanese version of the NEO Five-Factor Inventory in a large community sample

The NEO Five-Factor Inventory is the shortened version of the Revised NEO Personality Inventory. The aim of this study was to examine the reliability and validity of the Japanese version of the shortened version in the general population of Japan. This version was translated into Japanese and then administered to 2,051 adults in a rural town in Akita Prefecture. A total of 1,664 (81.1%) individuals gave valid answers. Internal reliability, assessed by Cronbach alpha for subscales, ranged from .60 to .77. The scales were only weakly correlated both with each other and with age. In a multiple regression analysis, only the Neuroticism scale score was a significant predictor of scores on the General Health Questionnaire. Factor analysis supported the theoretical structure of personality. Overall, the Japanese version showed good reliability and validity in this sample of the general population of Japan.     

Gender Differences in Rape Reporting

This paper compares male and female rapereporting behavior. Participants from National Crime andVictimization Survey data (90% female, 10% male) aremuch like victims of other violent crimes (25%non-white, higher than average unemployment, young, andunmarried). The data indicate that the situationalcharacteristics of rape, and factors that influence arape reporting decision, differ by sex. Whereas men fail to report rape when it jeopardizes theirmasculine self-identity, women fail to report rape whenthe rape does not fit the classic stereotypical rapesituation. Women reported victimization more frequently than did men. It is asserted that furthercomparative research on rape reporting behaviorutilizing qualitative methods is needed in order tofully understand rape victimization for bothsexes.     

When Good Intentions Are Not Enough: Modeling Postdecisional Cognitive Correlates of Condom Use1

Measures of intention usually leave substantial proportions of the variance in behavior unexplained. It has been suggested that improved behavioral prediction could be achieved by identifying postdecisional cognitive processes capable of distinguishing between intenders who do act and those do not act. Condom-related self-report measures of postdecisional cognitive processes were developed and tested in a cross-sectional questionnaire study involving 447 heterosexual students. A discriminant function composed of postdecisional measures was found to significantly distinguish between intenders who reported use and non-use and to correctly classify 80% of intenders. The results indicate that measures of the relative importance of competing intentions, prior planning of specific preparatory actions, and action-specific self-efficacy may enhance the prediction of condom use among intenders.     

Does infancy matter? predicting social behavior from infant temperament

In this essay we argue that infant temperament, defined as behavioral styles that appear early in life as a direct result of neurobiological factors, plays a significant role in the development and expression of social behavior. Temperament may be studied using a typological or dimensional approach and the relations between early temperament and later behavior can be examined in terms of homotypic or heterotypic continuity. The implication of each of these approaches for understanding the influence of infant temperament on social development is examined. As well, utilizing data from our laboratory, we suggest that under certain circumstances one can predict social behavior by identifying two temperament types in infancy. These types are high reactive/high negative infants and high reactive/high positive infants. A significant proportion of the high reactive/high negative infants display behavioral inhibition and social reticence through the preschool years, whereas a significant proportion of the high reactive/high positive infants display exuberance and positive social interaction through the preschool period.