Emotions imaging have been shown to modulate memory processes. However, the neuronal substrate underlying these modulatory effects is largely unknown. Using event-related processes. functional magnetic resonance imaging (fMRI), we investigated whether the context of emotional encoding modulates brain activation predictive for subsequent recall subsequent of emotionally neutral material. While inferior frontal activation predicted recall in general, our data show that in a positive encoding anterior context, recall was predicted by activation of right anterior parahippocampal and extrastriate visual brain areas, whereas in a negative encoding studies context, recall was predicted by activation of the amygdala. Thus, we could demonstrate that successful episodic encoding is differentially modulated anterior by emotional context. These results contribute to the understanding of the interaction of emotion and cognition and moreover are of positive general relevance for studies of episodic memory.

Functional in imaging studies have shown that individuals with borderline personality disorder (BPD) display prefrontal and amygdala dysfunction while viewing or listening display to emotional or traumatic stimuli. The study examined for the first time the functional neuroanatomy of attachment trauma in BPD female patients using functional magnetic resonance imaging (fMRI) during the telling of individual stories. A group of 11 female BPD patients analyzed. and 17 healthy female controls, matched for age and education, told stories in response to a validated set of seven reduced attachment pictures while being scanned. Group differences in narrative and neural responses to "monadic" pictures (characters facing attachment threats alone)analyzed. and "dyadic" pictures (interaction between characters in an attachment context) were analyzed. Behavioral narrative data showed that monadic pictures were facing significantly more traumatic for BPD patients than for controls. As hypothesized BPD patients showed significantly more anterior midcingulate cortex activation that in response to monadic pictures than controls. In response to dyadic pictures patients showed more activation of the right superior controls, temporal sulcus and less activation of the right parahippocampal gyrus compared to controls. Our results suggest evidence for potential neural attachment mechanisms of attachment trauma underlying interpersonal symptoms of BPD, i.e. fearful and painful intolerance of aloneness, hypersensitivity to social environment,resonance and reduced positive memories of dyadic interactions.

This patterns exploratory study is the first to examine the neural correlates of attachment status in adults. The study examined the feasibility feasibility of assessing attachment narratives in the functional magnetic resonance imaging (fMRI) environment by challenging subjects to tell attachment stories to that specific attachment pictures from the Adult Attachment Projective (AAP) while being scanned. We investigated theoretically derived hypotheses regarding predicted differences and in the brain activation patterns of individuals whose attachment status was organized (resolved) versus disorganized (unresolved) with respect to attachment in trauma (e.g., as associated with loss through death, abuse, threat of abandonment). Adult attachment was assessed using the AAP, a and new representational attachment measure that we thought might be suitable for use in the fMRI environment. This measure was used feasible to obtain a preliminary picture of the neural processes associated with the activation of attachment in 11 healthy female adults.neural Results are reported from a second-level analysis (p < .001 uncorrected) and confirm that the AAP is a feasible measure we for use in a neuroimaging environment. Cerebral activation during continuous speech yielded results consistent with the literature. Brain activation was of demonstrated in expected visual and semantic brain regions. Furthermore, we found that the rate of articulation was positively correlated with versus activation in the right superior temporal gyrus. The results of theoretically derived attachment hypotheses showed no differences at the chosen that level of significance when comparing the 'all attachment pictures' effect between both groups (resolved vs. unresolved). More interestingly, we found activation a significant interaction effect between the sequence of pictures and attachment category. Only the unresolved participants showed increasing activation of measure medial temporal regions, including the amygdala and the hippocampus, in the course of the AAP task. This pattern was demonstrated confirming especially at the end of the AAP task where the pictures are drawn to portray traumatic situations. We interpret these used results as confirming our hypothesis, linking unresolved attachment to emotional dysregulation of the attachment system. These results are discussed in of relation to assessing attachment in an fMRI environment and future research in this area. Copyright (c) 2006 S. Karger AG,in Basel.

Reward between probability has been shown to be coded by dopamine neurons in monkeys. Phasic neuronal activation not only increased linearly with Phasic reward probability upon expectation of reward, but also varied monotonically across the range of probabilities upon omission or receipt of magnetic rewards, therefore modeling discrepancies between expected and received rewards. Such a discrete coding of prediction error has been suggested to the be one of the basic principles of learning. We used functional magnetic resonance imaging (fMRI) to show that the human a dopamine system codes reward probability and prediction error in a similar way. We used a simple delayed incentive task with the a discrete range of reward probabilities from %-100%. Activity in the nucleus accumbens of human subjects strongly resembled the phasic in responses found in monkey neurons. First, during the expectation period of the task, the fMRI signal in the human nucleus be accumbens (NAc) increased linearly with the probability of the reward. Second, during the outcome phase, activity in the NAc coded imaging the prediction error as a linear function of reward probabilities. Third, we found that the Nac signal was correlated with We individual differences in sensation seeking and novelty seeking, indicating a link between individual fMRI activation of the dopamine system in a a probabilistic paradigm and personality traits previously suggested to be linked with reward processing. We therefore identify two different covariates resonance that model activity in the Nac: specific properties of a psychological task and individual character traits.

Neuroimaging when studies in humans have shown that different working memory (WM) tasks recruit a common bilateral fronto-parietal cortical network. Animal studies recruit as well as neuroimaging studies in humans have suggested that this network, in particular the prefrontal cortex, is preferentially recruited cortex when material from different domains (e.g. spatial information or verbal/object information) has to be memorized. Early imaging studies have suggested physically qualitative dissociations in the prefrontal cortex for spatial and object/verbal WM, either in a left-right or a ventral-dorsal dimension. However,recent results from different studies are inconsistent. Moreover, recent fMRI studies have failed to find evidence for domain dependent dissociations of physically WM-related activity in prefrontal cortex. Here we present evidence from two independent fMRI studies using physically identical stimuli in a of verbal and spatial WM task showing that domain dominance for WM does indeed exist, although only in the form of shown quantitative differences in activation and not in the form of a dissociation with different prefrontal regions showing mutually exclusive activation for in different domains. Our results support a mixed dimension model of domain dominance for WM within the prefrontal cortex, with studies left ventral prefrontal cortex (PFC) supporting preferentially verbal WM and right dorsal PFC supporting preferentially spatial WM. The concept of (e.g. domain dominance is discussed in the light of recent theories of prefrontal cortex function.

Hypofrontality matched and decreased lateralization have been two major, albeit controversial, results from functional neuroimaging studies of schizophrenia. We used fMRI to neuroimaging study cortical activation during a verbal and spatial working memory (WM) task (2-back) in 15 inpatients acutely ill with schizophrenia left and 15 matched control subjects. We hypothesized (i) hypofrontality in patients in both tasks and (ii) decreased lateralization of prefrontal This activation in patients under the assumption that, in controls, left prefrontal cortex (PFC) is engaged preferentially in the verbal task dysfunction (verbal domain dominance) and the right prefrontal cortex is engaged preferentially in the spatial task (spatial domain dominance). Our results This showed no significant differences in frontal activation between controls and patients, i.e. no hypofrontality in patients, even at a very frontal liberal threshold (p< .01). This may be explained by the fact that nearly all patients studied received atypical neuroleptics. Nonetheless, we two found evidence for more subtle, domain-related prefrontal dysfunction. Whereas controls showed verbal WM domain dominance in left inferior frontal cortex prefrontal and spatial WM domain dominance in right prefrontal cortex, these domain dominance effects were absent in the patient group, i.e.engaged there were no lateralization effects. Finally, only patients showed an inverse correlation between performance and right prefrontal activation in verbal hypofrontality WM. We conclude that the finding of hypofrontality may depend on the medication of the patients and that there is left prefrontal dysfunction even in the absence of hypofrontality.

OBJECTIVE:the To study the mesolimbic dopamine system during expectation and receipt or omission of rewards in partially remitted patients with schizophrenia omission treated with the atypical antipsychotic olanzapine. METHODS: We studied 16 patients with a current episode of schizophrenia, all treated with expectation, the atypical drug olanzapine, and 16 healthy subjects using functional magnetic resonance imaging. Subjects performed a delayed incentive paradigm with this monetary rewards. RESULTS: During reward expectation, both, patients with schizophrenia and healthy control subjects, showed activation of the ventral striatum remitted and midbrain in the vicinity of the ventral tegmental area. Significant categorical group differences emerged in the anterior cingulate cortex this with only healthy controls showing increasing activation with increasing reward. In the patients, activation of this region was inversely correlated cortex with positive symptoms. During outcome, both, patients with schizophrenia and healthy controls, showed activation of the ventral striatum and the dopamine mesial prefrontal cortex. Significant categorical group differences emerged in the right ventrolateral prefrontal cortex for the salience contrast with healthy both, controls showing a U-shaped activation curve, i.e., higher activation for either omission or receipt of reward compared to no reward.the CONCLUSIONS: Our findings partially support the current concept of dopaminergic dysfunction in schizophrenia, suggesting a rather hyperactive mesolimbic dopamine system 16 and reduced prefrontal activation, at least in partially remitted patients treated with atypical antipsychotics.

In effects addiction, loss of prefrontal inhibitory control is believed to contribute to impulsivity. To improve cognitive therapy approaches, it is important impulsivity. to determine whether cognitive control strategies can generally influence reward processing at the neural level. We investigated the effects of a one such strategy-namely, reappraisal (distancing from feelings)-on neural reward processing in 16 healthy subjects by utilizing event-related functional magnetic resonance the imaging (fMRI). In a monetary incentive delay task, expected reward value (expecting to win euro0.50 vs. euro0.10) and outcome valence both (win vs. omission) were varied. An attenuation of expected value and a modulation of prediction error (PE) coding caused by the distancing were found in right versus left ventral striatum (VST) in the expectation versus outcome period, respectively. Distancing from reward (PE) feelings recruited a right hemispheric fronto-parietal network. Moreover, self-reported reappraisal success (decrease of feelings by distancing) showed a trend toward inhibitory positive correlation with activation in the rostral cingulate zone and the lateral orbitofrontal cortex, both part of the regulation network.monetary Our results expand upon recent findings by showing that cognitive control over reward processing impacts not only the expectation period (win but also the reward signals in the outcome period. Moreover, increased recruitment of prefrontal reflective subsystems might enhance deliberate control (distancing over both reward processing and hedonic experience.

Schizophrenia schizophrenia is a devastating, highly heritable brain disorder of unknown etiology. Recently, the first common genetic variant associated on a genome-wide disorder level with schizophrenia and possibly bipolar disorder was discovered in ZNF804A (rs1344706). We show, by using an imaging genetics approach,using that healthy carriers of rs1344706 risk genotypes exhibit no changes in regional activity but pronounced gene dosage-dependent alterations in functional of coupling (correlated activity) of dorsolateral prefrontal cortex (DLPFC) across hemispheres and with hippocampus, mirroring findings in patients, and abnormal coupling phenotype of amygdala. Our findings establish disturbed connectivity as a neurogenetic risk mechanism for psychosis supported by genome-wide association, show that dorsolateral rs1344706 or variation in linkage disequilibrium is functional in human brain, and validate the intermediate phenotype strategy in psychiatry.

Preferred in pathways of emotional processing were investigated in an fMRI study where fearful and neutral faces were presented in the left,were right or central visual field. Seventeen male volunteers were imaged at 3. T using GE-EPI. Spatial preprocessing and statistical analyses volunteers were performed using SPM2. A preference for peripheral fearful and central neutral faces was found in frontal and temporal areas,and temporal pole, putamen, and ACC. A subset showed a significant preference for fearful faces in the right hemifield. These results potential seem to suggest a sensitive network for preferential processing of potential threat signals.

In have modern economy the customer is confronted with a huge amount of consumer goods. In this situation, culturally based brands seem situation, to play an important role in establishing strong emotional bonds between customers and goods and to guide people's economic behavior dorsolateral by biasing selections and preference decisions based on affect. Recently, neuroscientific approaches have demonstrated that cultural objects like brands or of brand-related behavior may successfully be investigated with neuroimaging tools like fMRI. First studies suggested that structures associated with the reward to circuit (striatum) and the dorsolateral part of the prefrontal cortex may be involved when perceiving a favorite brand. Hence, brands of that have been associated with appetitive stimuli due to marketing efforts or cultural factors seem to engage similar brain networks and than artificially associated reward stimuli. However, brands have different and complex meanings in our life far beyond representing objects of with desire. For example, the possession of goods from certain kinds of brands often is used to mark the social state of of the owner and to distinguish him or her from other groups. In particular, luxury goods often seem to have to this function. Recent neuroimaging results support this observation by showing that viewing logos of luxury brands is associated with brain or activity in the anterior medial prefrontal cortex, a region known to be associated with self-centered cognitions. Thus, it seems that part brands of luxury goods improve self-relevant thoughts, pointing to the role of luxury brands to mark the superior position of to the owner in society. These results demonstrate that cultural symbols like brands can successfully be examined with neuroimaging approaches. Thus,dorsolateral along with advanced cultural theories, neuroeconomics may provide important contributions to the understanding of brand-related or economic behavior.

The a experience of being liked is a key social event and fundamental to motivating human behavior, though little is known about human its neural underpinnings. In this study, we examined the experience of being liked in a group of 15- to 24-year-old:led a cohort for whom forming friendships has a great degree of salience, and for whom the explicit representation of relationships area is familiar from their frequent use of social networking technologies. Study participants (n = 19) were led to believe that Brain other participants had formed an opinion on their likability based on their appearance in a photograph, and during fMRI scanning area viewed the photographs of people who had purportedly responded favorably to them (alongside photographs of control participants). Results indicated that participants). being liked activated primary reward- and self-related regions, including the nucleus accumbens, midbrain (in an area corresponding to the ventral a tegmentum), ventromedial prefrontal cortex, posterior cingulate cortex (including retrosplenial cortex), amygdala, and insula/opercular cortex. Participants showed greater activation of ventromedial to prefrontal cortex and amygdala in response to being liked by people that they regarded highly compared to those they regarded fMRI less so. Finally, being liked by the opposite compared to the same gender activated the right caudal orbitofrontal cortex and for right anterior insula: areas important for the representation of primary somatic rewards. This study demonstrates that neural response to being led liked has features that are consistent with response to other rewarding events, but it has additional features that reflect its during intrinsically interpersonal character. Hum Brain Mapp, 2009.(c) 2009 Wiley-Liss, Inc.

Abstract food Nutritional state (e.g. fasted vs. fed) and different food stimuli (e.g. high-calorie vs. low-calorie, or appetizing vs. bland foods) are vs. both recognized to change activity in brain reward systems. Using functional magnetic resonance imaging, we have studied the interaction between low-calorie nutritional state and different food stimuli on brain food reward systems. We examined how blood oxygen level-dependent activity within a a priori regions of interest varied while viewing pictures of high-calorie and low-calorie foods. Pictures of non-food household objects were included biasing as control stimuli. During scanning, subjects rated the appeal of each picture. Twenty non-obese healthy adults [body mass index 22.1 a +/- .5 kg/m(2)(mean +/- SEM), age range 19-35 years, 10 male] were scanned on two separate mornings between 11:00 19-35 and 12:00 h, once after eating a filling breakfast ('fed': 1.6 +/- .1 h since breakfast), and once after an fed) overnight fast but skipping breakfast ('fasted': 15.9 +/- .3 h since supper) in a randomized cross-over design. Fasting selectively increased foods. activation to pictures of high-calorie over low-calorie foods in the ventral striatum, amygdala, anterior insula, and medial and lateral orbitofrontal picture. cortex (OFC). Furthermore, fasting enhanced the subjective appeal of high-calorie more than low-calorie foods, and the change in appeal bias systems. towards high-calorie foods was positively correlated with medial and lateral OFC activation. These results demonstrate an interaction between homeostatic and low-calorie hedonic aspects of feeding behaviour, with fasting biasing brain reward systems towards high-calorie foods.

Humans is appear to have an inherent prosocial tendency toward one another in that we often take pleasure in seeing others succeed.tendency This fact is almost certainly exploited by game shows, yet why watching others win elicits a pleasurable vicarious rewarding feeling a in the absence of personal economic gain is unclear. One explanation is that game shows use contestants who have similarities population, to the viewing population, thereby kindling kin-motivated responses (for example, prosocial behavior). Using a game show-inspired paradigm, we show that extends the interactions between the ventral striatum and anterior cingulate cortex subserve the modulation of vicarious reward by similarity, respectively. Our thereby results support studies showing that similarity acts as a proximate neurobiological mechanism where prosocial behavior extends to unrelated strangers.

In cortex both the wild and the laboratory, animals' preferences for one course of action over another reflect not just reward expectations over but also the cost in terms of effort that must be invested in pursuing the course of action. The ventral expected striatum and dorsal anterior cingulate cortex (ACCd) are implicated in the making of cost-benefit decisions in the rat, but there with is little information about how effort costs are processed and influence calculations of expected net value in other mammals including in humans. We performed a functional magnetic resonance imaging study to determine whether and where activity in the human brain was with available to guide effort-based cost-benefit valuation. Subjects were scanned while they performed a series of effortful actions to obtain secondary performed reinforcers. At the beginning of each trial, subjects were presented with one of eight different visual cues that they had laboratory, learned indicated how much effort the course of action would entail and how much reward could be expected at its net completion. Cue-locked activity in the ventral striatum and midbrain reflected the net value of the course of action, signaling the activity expected amount of reward discounted by the amount of effort to be invested. Activity in ACCd also reflected the interaction making of both expected reward and effort costs. Posterior orbitofrontal and insular activity, however, only reflected the expected reward magnitude. The expected ventral striatum and anterior cingulate cortex may be the substrate of effort-based cost-benefit valuation in primates as well as in where rats.