Ambiguous emotion recognition in temporal lobe epilepsy: The role of expression intensity

The lateralization of emotion processing is currently debated and may be further explored by examining facial expression recognition (FER) impairments in temporal lobe epilepsy (TLE). Furthermore, there is also debate in the literature whether FER deficits in individuals with TLE are more pronounced in the right than in the left hemisphere. Individuals with TLE were tested with an FER task designed to be more sensitive than those classically used to shed light on this issue. A total of 25 right- and 32 left-TLE patients, candidates for surgery, along with controls, underwent an FER task composed of stimuli shown not only at full-blown intensities (100 %), but also morphed to lower-intensity display levels (35 %, 50 %, and 75 %). The results showed that, as compared to controls, right-TLE patients showed deficits in the recognition of all emotional categories. Furthermore, when considering valence, right-TLE patients were impaired only in negative emotion recognition, but no deficits for positive emotions were highlighted in left-TLE patients. Finally, only the right-TLE patients’ impairment was found to be related to the age of epilepsy onset. Our work demonstrates that the FER deficits in TLE span multiple emotional categories and show manifestations dependent on the laterality of the epileptic focus. Taken together, our findings provide the strongest evidence for the right-hemisphere model, but they also partially support the valence model. We suggest that current models are not exhaustive at explaining emotional-processing cerebral control, and further that multistep models should be developed.     

The impact of emotions on recall: An empirical study on social ads

Emotions are a complex phenomenon that entails a tricky problem regarding the measurement. To partially overcome this question, we assess emotions both using self‐report and measures commonly used in neuromarketing. This study assesses the accuracy of the recall after 4 months regarding two social advertising videos about female genital mutilation. Forty female participants were recruited. The skin conductance trend of the participants is different when viewing the two videos. The majority of participants (94.9%) reported that the two videos elicited different emotions (sadness for the first video and anger for the second one). Furthermore, according to arousal and valence model, these data are consistent with the literature that underlines the importance of psychophysiological indexes in measuring emotions and their associations with memory performances.     

Facial expressions of singers influence perceived pitch relations

In four experiments, we examined whether facial expressions used while singing carry musical information that can be “read” by viewers. In Experiment 1, participants saw silent video recordings of sung melodic intervals and judged the size of the interval they imagined the performers to be singing. Participants discriminated interval sizes on the basis of facial expression and discriminated large from small intervals when only head movements were visible. Experiments 2 and 3 confirmed that facial expressions influenced judgments even when the auditory signal was available. When matched with the facial expressions used to perform a large interval, audio recordings of sung intervals were judged as being larger than when matched with the facial expressions used to perform a small interval. The effect was not diminished when a secondary task was introduced, suggesting that audio-visual integration is not dependent on attention. Experiment 4 confirmed that the secondary task reduced participants’ ability to make judgments that require conscious attention. The results provide the first evidence that facial expressions influence perceived pitch relations.     

Decision-making competence in younger and older adults: which cognitive abilities contribute to the application of decision rules?

Older adults perform worse than younger adults when applying decision rules to choose between options that vary along multiple attributes. Although previous studies have shown that general fluid cognitive abilities contribute to the accurate application of decision rules, relatively little is known about which specific cognitive abilities play the most important role. We examined the independent roles of working memory, verbal fluency, semantic knowledge, and components of executive functioning. We found that age-related decline in applying decision rules was statistically mediated by age-related decline in working memory and verbal fluency. Our results have implications for theories of aging and decision-making.     

Primary Care Provider Familiarity with Binge Eating Disorder and Implications for Obesity Management: A Preliminary Survey

Current guidelines for the evaluation and treatment of obesity recommend referring individuals with binge eating disorder (BED) to a mental health professional. However, it is unclear how familiar primary care providers are with BED. The purpose of this study was to assess providers' familiarity with BED diagnosis and treatment. Providers in two primary care clinics completed a questionnaire, which assessed perceived familiarity with BED and demonstrated familiarity with BED diagnosis and treatment. Results indicated that 61% of respondents demonstrated familiarity with the essential symptoms of BED, and 80% reported familiarity with the diagnosis of BED. However, 35% of respondents who perceived themselves as familiar with BED did not demonstrate familiarity with the most basic symptoms. These results demonstrate that while many providers in primary care are familiar with BED, steps to improve provider familiarity with the disorder and provide appropriate mechanisms to address BED are warranted.     

Serotonin: Modulator of a drive to withdraw

Serotonin is a fundamental neuromodulator in both vertebrate and invertebrate nervous systems, with a suspected role in many human mental disorders. Yet, because of the complexity of serotonergic function, researchers have been unable to agree on a general theory. One function suggested for serotonin systems is the avoidance of threat. We propose and review evidence for an alternative hypothesis, that a phylogenetically primitive of function of serotonin is to oppose the activating neuromodulators (particularly noradrenalin and dopamine). The functional effect of this opposition can be seen as applying a drive to withdraw from dangerous, aversive or high stimulation environments. Proposing that serotonin is involved in a drive to withdraw and seek contentment, instead of a drive to avoid, may be compatible with several lines of evidence on serotonin function and may facilitate a better understanding of serotonergic neuromodulation in human psychopathology.     

Preferences for arthritis care among urban African Americans: "I don't want to be cut".

Despite greater disability from knee osteoarthritis among Blacks, Whites are 3-5 times more likely to have total knee replacement (TKR). The authors explored whether beliefs among Blacks about arthritis and surgery contribute to this disparity. Ninety-four Blacks, ages 50 to 89, with knee arthritis underwent semistructured qualitative interviews regarding disability, beliefs about arthritis, beliefs about TKR, and treatment preferences. Content analyses yielded 6 themes: preference for natural remedies, negative expectations of surgery, beliefs about God's control, preference for continuing in their current state, relationships with specialists, and fear of surgery or death. Given its high levels of disability, this cohort had low expectations of TKR. Culturally sensitive educational programs might improve patient altitudes and beliefs regarding TKR, ultimately increasing appropriate usage.     

Reprocessing as a recognition cue

The use of mental operations as recognition cues was investigated. Two experiments support the hypothesis that processing details are retained in memory and that a re-creation of those processing details can effectively cue recognition. Four subjects performed a mental arithmetic task that emphasized speed and accuracy while discouraging memorization of the numbers. Recognition was cued either by single numbers or by a pair of numbers that, when added, replicated an episode of the original task. Reprocessing an episode was the most effective recognition cue. Of the two single-number cues, the intermediate subtotals were recognized, whereas the numbers that had been physically displayed were not. The study suggests: (1) that the sequence of mental operations is retained in memory, (2) that reprocessing uses this trace to facilitate performance, and (3) that the detection of facilitated reprocessing aids recognition.