Lateralized Changes in Regional Cerebral Blood Flow during Performance of Verbal and Facial Recognition Tasks: Correlations with Performance and “Effort”

Functional neuroimaging has been used to investigate neural substrates of mnemonic processes, and cerebral blood flow (CBF) measures have been sensitive to activation with memory tasks. Studies of memory with two-dimensional¹³³Xenon clearance techniques found that word and face recognition tasks produced contralateral CBF changes in mid-temporal cortical regions. This study replicated the activation paradigm, expanding to the three-dimensional resolution of positron emission tomography (PET). Word and face recognition, and a control baseline task were administered to 19 healthy right-handed volunteers (11 men, 8 women) during successive 10 min PET¹⁵O-water measures of CBF. Quantitative CBF rates were calculated with the arterial input function and the equilibrium model. Redistributions of blood flow were compared across tasks using both absolute and relative (region/whole brain) CBF.Replicating the¹³³Xenon clearance findings, CBF was “appropriately” lateralized during task performance (left–right for words > left–right for faces) in the mid-temporal region. Contrary to predictions, the recognition tasks did not activate expected mesolimbic or prefrontal areas. The task-induced CBF changes also correlated with performance. Bilateral CBF in mid-temporal and parahippocampal gyrus regions of interest correlated with the ability to correctly identify word targets (sensitivity). Left-lateralized CBF in the amygdala and hippocampus correlated with better word sensitivity as well as specificity (ability to correctly reject foils). Complementally, right-lateralized CBF in the parahippocampal gyrus correlated with better face specificity performance. In addition, left-lateralized CBF in the amygdala and right-lateralized CBF in the parahippocampal gyrus and hippocampus correlated with “mental effort” indices (task performance relative to basal ability) for word and face memory tasks, respectively. Thus, whereas this recognition task showed the expected lateralized increase in the mid-temporal region and not in frontal and limbic areas, lateralized activation in some of these areas was associated with better performance. Exploratory analyses on other regions showed lateralized changes in one additional temporal region, the occipital-temporal, and several limbic regions.     

Referenzsemantik in der Partnermodellierung

How can we explain that an assertion on something perceived can be understood in the same manner by somebody who cannot perceive that scene? This problem bases the interest in computational linguistics in how listener modeling could possibly be harmonized with reference semantics. Mental images substituting real perception appear as a way out. The architecture of the listener model has to be adapted to the creation and use of such pictorial data structures. Furthermore, the relation between the latter and a verbal (i. e., propositional) representation must be understood. The resulting architecture of a listener model with reference semantics can be employed to solve communicational problems from three general classes in a better way, as is demonstrated by an example implementation.     

Behavioral Intentions: Which Ones Predict Fertility Behavior in Married Couples?1

The published literature on the relationship between behavioral intentions and fertility behavior exhibits four major problems: inconsistent and confusing use of theoretical constructs, limited use of different types of intentions, use of nonbehavioral outcomes, and failure to explore adequately the couple aspects of the intentions/behavior relationship. The study reported here addresses these problems by using a theoretical framework that characterizes the psychological/behavioral sequence leading to a planned conception, three different types of fertility intentions, a behavioral outcome variable, and data from 196 married couples with no children and 185 married couples with one child. Data analysis results in a simultaneous equation, constrained regression model which indicates that child-timing intentions are the most important predictors of proceptive behavior over a 3-1/2 year period and that childbearing intentions are next in importance; that behavioral intentions are the final common pathway through which fertility motivations, attitudes, beliefs, and desires affect behavior; that the use of proceptive behavior as an outcome variable improves the explanatory power of our models; and that the interaction of couple intentions do not demonstrate greater husband or wife influence over couple proceptive behavior but do demonstrate that disagreement has a delaying effect on the onset of that behavior.     

Matching components of self-report and peer-nomination personality measures

Two common methods of measuring personality variables are examined with respect to the ways in which they control respondent biases. A form of the mental-test theory model is developed which makes explicit differences in score components that result from different methodological constraints imposed by the two methods. From the model, it is possible to specify the operations necessary to provide equivalent information from the two sets of data. Performance of these operations in an empirical test supports the model by producing generally higher correlations between the variables having score components which are more closely matched.     

Contemporary views of man in psychology

Summary Contemporary views of man in psychology are in flux. The American tradition of experimental materialism is being modified by serious attention to personality theory. The existential movement in Europe is beginning to have a serious influence on both theory and therapy. The development of psychosomatic medicine is part of a vital reconsideration of the problems of mind-body. And within the psychotherapeutic disciplines, serious attention is being given to the role of patient-therapist values and the therapeutic concept of man. The relevance of spiritual concepts is being given serious consideration, and potential modifications of theology and psychology are being entertained by both disciplines. Hopefully, out of this interchange will develop more adequate concepts of man and God.Presented at Eastern Mennonite College and Seminary, January, 15, 1965, as one of the 1964–65 lecture series on Contemporary Views of Man.     

Psychiatry and religion circa 1978: Analysis of a decade,part II

Prior tensions between science and religion have dissolved and coalesced into new alliances based on ideology and philosophy. This general cultural pattern is reflected in the realignment of interests and interactions between paychiatry and religion. There are increasing numbers of mental health professionals with devout religious commitments and involvement in religiously oriented mental health activities; while clergy have developed new organizational structures to reflect many diverse mental health interests, including pastoral counseling, community mental health chaplains, hospitals chaplains, and expanded parish ministries. Clinical and research literature has continued to rapidly proliferate, while a unique genre of pastoral care and counseling literature has emerged. A decade ago there was hope for an amicable alliance between specialists in psychiatry and in religion. That irenic quest has shifted into overlapping goals and roles, with tensions between those engaged in universalistic norms and those seeking to develop particularistic norms.Dr. Pattison is Director of Training, Orange County Department of Mental Health and Professor and Acting Chairman of the Department of Psychiatry and Human Behavior, University of California Irvine Medical Center, 101 City Drive South, Orange, California 92668. Part I of his article appeared in the Fall, 1978 issue ofPastoral Psychology.     

Memory for movement: Interaction of location and distance cues and imagery ability

The present experiments examined the role of imagery ability in recall of either the terminal location or the distance of a preselected horizontal linear movement following changes in the recall starting position. Subjects were selected on the basis of their scores on a shortened version of the Betts Questionnaire upon Mental Imagery (Betts Q.M.I., Sheehan 1967). Both high and low imagers were assigned to one of four groups, HIL, LIL, HID, LID, the last letter indicating the movement cue (terminal location or distance moved) to be recalled. Recall of the appropriate movement cue from one of four new recall starting positions occurred after either a 5-sec or 30-sec unfilled retention interval. Analysis of constant error indicated all groups were unable to recall the specified movement cue independent of the other source of information, even when subjects were given explicit instructions to utilise an imagery strategy. The data corroborate our earlier findings that memory for self paced movements is based on an interaction of location and distance cues derived from the criterion movement.     

Is there a ‘psychosomatogenic’ family?*

Review of the literature revealed two family theories of psychosomatic illness: the ‘enmeshed’ family of Minuchin and the family with affect disturbances. We interviewed twelve families, each containing a child with eczema. Most, but not all, of the families do fit in with one or other or both of the proposed interactional patterns, but the theory of a single family type, the ‘psychosomatogenic family’, is not supported. This complements the studies of individuals where specificity hypotheses have proved oversimplified.