The effects of short interventions of focused-attention vs. self-compassion mindfulness meditation on undergraduate students: Evidence from self-report, classroom performance, and ERPs.

Mindfulness-based stress reduction (MBSR) training has been shown to improve cognitive processing, wellbeing, and academic performance. However, mindfulness interventions that are integrated into non-mindfulness related courses have not been well-investigated. Further, the unique effects of different aspects of MBSR training are not as well understood. This paper examines the effects that are uniquely associated with focused-attention versus self-compassion mindfulness practices utilizing a multi-method approach. Event-related potentials (ERPs) were recorded during an Emotional Flanker task, and self-report measures of wellbeing and measures of classroom performance were collected before and after training. Participants were students in two sections of the same undergraduate course and either completed 10 weeks of focused-attention practice or self-compassion practice that was built into their class sessions. Students in the focused-attention group (mean age = 22.08) had reduced interference effects on their reaction times following the training. Students in the self-compassion group (mean age = 23.91) showed altered processing of conflict on negative trials via the N2 and P3 ERP amplitudes after the training. This group also reported significant improvements in wellbeing and performed significantly better on more class tests compared to the focused-attention group. These data support the effectiveness of incorporating brief, simplified mindfulness practices in any classroom as an intervention to improve attention, wellbeing and classroom performance.

Individual differences in social intelligence and perception of emotion expression of masked and unmasked faces.

Facial expressions provide key information for successful social interactions. Recent research finds that accurate perception of emotion expressions decreases when faces are presented with face masks. What is unknown is how individual differences in social intelligence may influence perception of masked emotion expressions. In this study, participants (n = 224) completed an emotion perception task of face stimuli presented with and without face masks and completed two measures of social intelligence: the Reading the Mind in the Eyes Test (RMET) and the Tromsø Social Intelligence Scale (TSIS). Face masks were found to significantly decrease the accurate identification of emotion expressions, impacting the perception of disgust and sad expressions the most. Further, the type of emotion misattributed to facial expressions varied across expressions. Performance on the RMET test did predict perception accuracy, while scores on the TSIS did not. As face masks continue to be common globally, we must be aware that they cause interference with our social interactions and perceptions. Further, some individuals may be more negatively impacted by these effects than others. As such, it is important that we find ways to ensure that we are effectively communicating with one another and have patience when perception mistakes arise.

Meditation interventions among heart failure patients: An integrative review.

BACKGROUND: There has been growing interest in meditation techniques as an intervention in chronic disease populations. Little is known of the effect meditation practice has on outcomes among patients with heart failure. PURPOSE: To identify and examine current literature on meditation interventions on heart failure outcomes. METHOD: The review utilized methods described by Whittemore and Knafl. Three electronic databases were searched through March 2018. Terms used were "mindfulness OR meditation" and "heart failure" in combination, generating 58 articles after duplicates were removed. After inclusion and exclusion criteria were applied, six studies qualified for review, including four articles with samples from the United States and two with samples from Brazil and Sweden, respectively. RESULTS: Among the six studies in the final sample, the total number of participants was 320 heart failure patients. Interventional design and length varied among the studies, and 20 different dependent variables were identified. This study distinguished four categories of outcome measures with significant findings: psychosocial, biophysical, quality of life and heart failure symptom burden. Compared with controls meditation practice significantly improved depression (p<.05), social support (p<.05), biophysical factors and quality of life (p<.05), in addition to reducing heart failure symptom burden. Across-study comparisons were limited due to variation in intervention definitions and designs. Additionally, the intervention dose and reporting method varied, limiting comparisons. The sample size in five out of six studies was fewer than 50 participants. Over 20 different measures were used across the six studies to measure outcome variables. CONCLUSION: Meditation may offer a patient-driven practice to reduce heart failure symptoms as well as improve psychosocial wellness and quality of life. Future research among heart failure patients should include the following: rigorous definition of meditation interventions, consistency in intervention characteristics, larger controlled trials, and standardized outcome instruments.

Increased neural sensitivity to self-relevant stimuli in major depressive disorder.

The current research examined how individuals with depression process emotional, self-relevant stimuli. Across two studies, individuals with depression and healthy controls read stimuli that varied in self-relevance while EEG data were recorded. We examined the late positive potential (LPP), an ERP component that captures the dynamic allocation of attention to motivationally salient stimuli. In Study 1, participants read single words in a passive-viewing task. Participants viewed negative, positive, or neutral words that were either normative or self-generated. Exploratory analyses indicated that participants with depression exhibited affective modulation of the LPP for self-generated stimuli only (both positive and negative) and not for normative stimuli; healthy controls exhibited similar affective modulation of the LPP for both self-relevant and normative stimuli. In Study 2, using a separate sample and a different task, stimuli were provided within the context of sentence stems referring to the self or other people. Participants with depression were more likely to endorse negative self-referent sentences and reject positive ones compared to healthy controls. Depressed participants also exhibited an increased LPP to negative stimuli compared to positive or neutral stimuli. Together, these two studies suggest that depression is characterized by relatively increased sensitivity to affective self-relevant stimuli, perhaps in the context of a broader reduction in emotional reactivity to stimuli that are not self-relevant. Thus, depression may be characterized by a more nuanced pattern based on the degree of stimulus self-relevance than either a global decrease or increase in reactivity to affective stimuli.

Emotion Words' Effect on Visual Awareness and Attention of Emotional Faces.

To explore whether the meaning of a word changes visual processing of emotional faces (i.e., visual awareness and visual attention), we performed two complementary studies. In Experiment 1, we presented participants with emotion and control words and then tracked their visual awareness for two competing emotional faces using a binocular rivalry paradigm. Participants experienced the emotional face congruent with the emotion word for longer than a word-incongruent emotional face, as would be expected if the word was biasing awareness toward the (unseen) face. In Experiment 2, we similarly presented participants with emotion and control words prior to presenting emotional faces using a divided visual field paradigm. Emotion words were congruent with either the emotional face in the right or left visual field. After the presentation of faces, participants saw a dot in either the left or right visual field. Participants were slower to identify the location of the dot when it appeared in the same visual field as the emotional face congruent with the emotion word. The effect was limited to the left hemisphere (RVF), as would be expected for linguistic integration of the word with the face. Since the task was not linguistic, but rather a simple dot-probe task, participants were slower in their responses under these conditions because they likely had to disengage from the additional linguistic processing caused by the word-face integration. These findings indicate that emotion words bias visual awareness for congruent emotional faces, as well as shift attention toward congruent emotional faces.

Sweet-cheeks vs. pea-brain: embodiment, valence, and task all influence the emotional salience of language.

Previous research has found that more embodied insults (e.g. numbskull) are identified faster and more accurately than less embodied insults (e.g. idiot). The linguistic processing of embodied compliments has not been well explored. In the present study, participants completed two tasks where they identified insults and compliments, respectively. Half of the stimuli were more embodied than the other half. We examined the late positive potential (LPP) component of event-related potentials in early (400-500 ms), middle (500-600 ms), and late (600-700 ms) time windows. Increased embodiment resulted in improved response accuracy to compliments in both tasks, whereas it only improved accuracy for insults in the compliment detection task. More embodied stimuli elicited a larger LPP than less embodied stimuli in the early time window. Insults generated a larger LPP in the late time window in the insult task; compliments generated a larger LPP in the early window in the compliment task. These results indicate that electrophysiological correlates of emotional language perception are sensitive to both top-down and bottom-up processes.

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention.

Two dominant theories on lateralized processing of emotional information exist in the literature. One theory posits that unpleasant emotions are processed by right frontal regions, while pleasant emotions are processed by left frontal regions. The other theory posits that the right hemisphere is more specialized for the processing of emotional information overall, particularly in posterior regions. Assessing the different roles of the cerebral hemispheres in processing emotional information can be difficult without the use of neuroimaging methodologies, which are not accessible or affordable to all scientists. Divided visual field presentation of stimuli can allow for the investigation of lateralized processing of information without the use of neuroimaging technology. This study compared central versus divided visual field presentations of emotional images to assess differences in motivated attention between the two hemispheres. The late positive potential (LPP) was recorded using electroencephalography (EEG) and event-related potentials (ERPs) methodologies to assess motivated attention. Future work will pair this paradigm with a more active behavioral task to explore the behavioral impacts on the attentional differences found.

Valence and arousal influence the late positive potential during central and lateralized presentation of images.

The motivated attention network is believed to be the system that allocates attention toward motivationally relevant, emotional stimuli in order to better prepare an organism for action [Lang, P. J., Bradley, M. M., & Cuthbert, B. N. (1997). Motivated attention: Affect, activation, and action. In P. J. Lang, R. F. Simons, M. Balaban, & R. Simons (Eds.), Attention and orienting: Sensory and motivational processes (pp. 97-135). Psychology Press]. The late positive potential (LPP), an event-related potential (ERP) that is a manifestation of the motivated attention network, has not been found to reliably differentiate the valence of emotionally relevant stimuli. In two studies, we systematically varied epoch, stimulus arousal, stimulus valence, and hemisphere of presentation (Study 2) to investigate valence effects in the LPP. Both central and divided visual field presentations of emotional stimuli found the LPP to be sustained in later windows for high-arousing unpleasant images compared to pleasant images. Further, this effect was driven by sustained LPP responses following left hemisphere presentations of unpleasant stimuli compared to right. Findings are discussed regarding hemispheric processing of emotion and how lateralized emotion processes might contribute to psychopathology.

Biased processing of sad faces: an ERP marker candidate for depression susceptibility.

Depression has been associated with task-relevant increased attention toward negative information, reduced attention toward positive information, or reduced inhibition of task-irrelevant negative information. This study employed behavioural and psychophysiological measures (event-related potentials; ERP) to examine whether groups with risk factors for depression (past depression, current dysphoria) would show attentional biases or inhibitory deficits related to viewing facial expressions. In oddball task blocks, young adult participants responded to an infrequently presented target emotion (e.g., sad) and inhibited responses to an infrequently presented distracter emotion (e.g., happy) in the context of frequently presented neutral stimuli. Previous depression was uniquely associated with greater P3 ERP amplitude following sad targets, reflecting a selective attention bias. Also, dysphoric individuals less effectively inhibited responses to sad distracters than non-dysphoric individuals according to behavioural data, but not psychophysiological data. Results suggest that depression risk may be most reliably characterised by increased attention toward others' depressive facial emotion.

Relationships among cognition, emotion, and motivation: implications for intervention and neuroplasticity in psychopathology.

Emotion-cognition and motivation-cognition relationships and related brain mechanisms are receiving increasing attention in the clinical research literature as a means of understanding diverse types of psychopathology and improving biological and psychological treatments. This paper reviews and integrates some of the growing evidence for cognitive biases and deficits in depression and anxiety, how these disruptions interact with emotional and motivational processes, and what brain mechanisms appear to be involved. This integration sets the stage for understanding the role of neuroplasticity in implementing change in cognitive, emotional, and motivational processes in psychopathology as a function of intervention.

Depression reduces perceptual sensitivity for positive words and pictures.

There is evidence of maladaptive attentional biases for lexical information (e.g., Atchley, Ilardi, & Enloe, 2003; Atchley, Stringer, Mathias, Ilardi, & Minatrea, 2007) and for pictographic stimuli (e.g., Gotlib, Krasnoperova, Yue, & Joormann, 2004) among patients with depression. The current research looks for depressotypic processing biases among depressed out-patients and non-clinical controls, using both verbal and pictorial stimuli. A d' measure (sensitivity index) was used to examine each participant's perceptual sensitivity threshold. Never-depressed controls evidenced a detection bias for positive picture stimuli, while depressed participants had no such bias. With verbal stimuli, depressed individuals showed specific decrements in the detection of positive person-referent words (WINNER), but not with positive non-person-referent words (SUNSHINE) or with negative words. Never-depressed participants showed no such differences across word types. In the current study, depression is characterised both by an absence of the normal positivistic biases seen in individuals without mood disorders (consistent with McCabe & Gotlib, 1995), and by a specific reduction in sensitivity for person-referent positive information that might be inconsistent with depressotypic self-schemas.

Processing of emotional distraction is both automatic and modulated by attention: evidence from an event-related fMRI investigation.

Traditionally, emotional stimuli have been thought to be automatically processed via a bottom-up automatic "capture of attention" mechanism. Recently, this view has been challenged by evidence that emotion processing depends on the availability of attentional resources. Although these two views are not mutually exclusive, direct evidence reconciling them is lacking. One limitation of previous investigations supporting the traditional or competing views is that they have not systematically investigated the impact of emotional charge of task-irrelevant distraction in conjunction with manipulations of attentional demands. Using event-related fMRI, we investigated the nature of emotion-cognition interactions in a perceptual discrimination task with emotional distraction by manipulating both the emotional charge of the distracting information and the demands of the main task. Our findings show that emotion processing is both automatic and modulated by attention, but emotion and attention were only found to interact when finer assessments of emotional charge (comparison of most vs. least emotional conditions) were considered along with an effective manipulation of processing load (high vs. low). The study also identified brain regions reflecting the detrimental impact of emotional distraction on performance as well as regions involved in coping with such distraction. Activity in the dorsomedial pFC and ventrolateral pFC was linked to a detrimental impact of emotional distraction, whereas the dorsal ACC and lateral occipital cortex were involved in helping with emotional distraction. These findings demonstrate that task-irrelevant emotion processing is subjective to both the emotional content of distraction and the level of attentional demand.

Evidence for automatic sentence priming in the fusiform semantic area: convergent ERP and fMRI findings.

Event-related potential (ERP) studies of semantic processing have generally focused on the N400, a component that peaks at about 400 ms in response to words and which is larger when words are incongruent with the preceding sentence context. An earlier left-lateralized posterior N2(p3) has also been found to be correlated with an "unexpectedness" rating for incongruent sentence endings [Dien, Frishkoff, Cerbone, and Tucker, 2003, Parametric analysis of event-related potentials in semantic comprehension: evidence for parallel brain mechanisms, Cognitive Brain Research, 15: 137-153]. Because the incongruent endings were too odd to be explicitly predicted, we here hypothesize that this rating, and hence the N2(p3), reflects the degree of automatic spreading activation (ASA) in the visual lexical network rather than semantic expectancy, an interpretation also consistent with the early latency of this ERP (208 ms). In order to identify the brain systems involved in these linguistic processes, functional magnetic resonance imaging (fMRI) was utilized in a replication of the ERP study [Dien, Frishkoff, Cerbone, and Tucker, 2003, Parametric analysis of event-related potentials in semantic comprehension: evidence for parallel brain mechanisms, Cognitive Brain Research, 15: 137-153]. We found that activation in the fusiform semantic area (FSA), an area that converges with the source solution for the N2(p3), responded to the "unexpectedness" parameter in the same manner as the N2(p3) component. These findings suggest that the FSA helps mediate ASA processes and that the N2(p3) can serve as an index of ASA. Furthermore, close effects were found in the superior frontal gyrus and the inferior frontal gyrus that could reflect subvocalization and semantic selection processes respectively.

The Fear Survey Schedule as a measure of anxious arousal: evidence from ERPs.

Anxious arousal and anxious apprehension have been proposed to be two aspects of anxiety that are differentially lateralized. Two prior event-related potential (ERP) studies have found right-lateralized ERPs that correlate with scores on the Fear Survey Schedule (FSS) but not with the Spielberger State-Trait Anxiety Inventory (STAI) scores. This study attempts to replicate the findings of right-lateralization of FSS correlates using high-density ERPs (n=58). A spatial cueing task where emotional faces validly or invalidly cued targets was used. A right-lateralized posterior component (P296) greatest in amplitude for high FSS scores was found. This finding further supports the proposition that the FSS measures anxious arousal and that anxious arousal can be right-lateralized.

Activation of the posterior cingulate by semantic priming: a co-registered ERP/fMRI study.

Although the N400 is the best understood semantically sensitive component of the event-related potential (ERP), others have been observed as well. In an earlier lexical decision study, an N300 ERP was found to be enhanced to unprimed targets, although the effect could also be characterized as a prolonged P2 to primed targets as described in other reports. Because its scalp topography suggested its neural source might be of interest, a source localization was conducted that suggested that this component emanated from the dorsal posterior cingulate cortex (dPCC). In order to confirm this word N300 localization, a functional magnetic resonance imaging (fMRI) study was conducted to replicate the ERP study with a separate sample of 17 participants in an event-related design, using a 3-T scanner. A significant activation in the right dPCC was found corresponding to the N300 localization. The activation was greater on the related prime trials, supporting the characterization of the ERP component as being a P2 rather than an N300. A review is provided which suggests that a number of separate lines of ERP research regarding the word N300, the picture N300, the word P2, the phonological mismatch negativity, and the word midline frontal negativity may be most parsimoniously regarded as dealing with the same ERP component and that they all therefore emanate from the dPCC. It is suggested that this region plays a role in stimulus-response mapping in polymodal fashion. It is also suggested that the ERP component be termed a P2-dPCC.