EXPRESS: Task demands moderate the effect of emotion on attentional capture

The current experiment examined the effect of task demands on attention to emotional images. Eighty participants viewed pairs of images, with each pair consisting of an emotional (negative or positive) and a neutral image, or two neutral images. Participants’ eye movements were recorded during picture viewing, and participants were either asked 1) which picture contains more colour? (colour task), 2) are the images equally pleasant? (pleasantness task), 3) which picture do you prefer? (preference task), or 4) were given no task instructions (control task). Although the results did not suggest that emotional images strongly captured attention, emotional images were looked at earlier than neutral images. Importantly, the pattern of results were dependent upon the task instructions; whilst the preference and colour task conditions showed early attentional biases to emotional images, only positive images were looked at earlier in the pleasantness task condition, and no early attentional biases were observed in the control task. Moreover, total fixation duration was increased for positive images in the preference task condition, but not in the other task conditions. It was concluded that attention to emotional stimuli can be modified by the demands of the task during viewing. However, further research should consider additional factors, such as the cognitive load of the viewing tasks, and the content of the images used.

Pattern-Induced Visual Discomfort and Anxiety in Migraineurs: Their Relationship and the Effect of Colour

In migraineurs, coloured lenses were found to reduce the visual stress caused by an aversive pattern known to trigger migraines by 70%, but do such patterns also produce a low-level anxiety/fear response? Is this response lessened by colour? We sought to investigate this in a study comprising a broad screening component followed by a dot-probe experiment to elicit attentional biases (AB) to aversive patterns. Undergraduate psychology students completed headache and visual discomfort (VD) questionnaires (N = 358), thereby forming a subject pool from which 13 migraineurs with high visual discomfort and 13 no-headache controls with low visual discomfort, matched on age and sex, completed a dot-probe experiment. Paired stimuli were presented for 500 ms: aversive achromatic 3 cpd square wave gratings vs control, scrambled patterns. These conditions were repeated using the colour that was most comfortable for each participant. VD was greater in the more severe headache groups. On all measures, the migraineurs were more anxious than the controls, and a positive relationship was found between VD and trait anxiety. The 3 cpd gratings elicited an aversive AB in the migraine group which was somewhat reduced by the use of colour, and this was not seen in the controls. The results suggest a new role for colour in reducing visual stress via anxiety/fear reduction.

Tone Probe Paradigm (the dot probe paradigm's forgotten ancestry)

This is my BSc dissertation completed at, and submitted to, UCL's Psychology Department in 1981. It reports on my attentional probe paradigm initially used by myself in the auditory modality to demonstrate attentional biases in the processing of threatening information by participants with identifiable personality characteristics. A group of researchers at St. George's (University of London), introduced to this paradigm by M. W Eysenck, applied my attentional probe paradigm in the visual modality (dot probe paradigm). This dissertation is hand-written, rather hurriedly put together, but still easy to read. The experimental work which introduced the attentional probe paradigm appears towards the end of the dissertation.

The Influence of Spatial Position on Affect

<p>Conceptual metaphor theory posits that the physical domain (e.g. the vertical dimension) is used to understand abstract concepts (e.g. affect); creating expressions such as, “falling into a deep depression.” Previous research concerning vertical metaphors has found that people more rapidly process positive and negative words when the valence was metaphorically consistent with vertical position (Meier & Robinson, 2004) and that mood traits were metaphorically consistent with vertical attentional biases (Meier & Robinson, 2006). The purpose of the current study was to investigate the effects of vertical perceptual biases on mood; whether shifting perception could have an effect upon the emotional experience of an individual. In Experiment 1, vertical attention was manipulated by having university students move letters upwards or downwards on a computer screen, with measures of mood completed before and after the manipulation. In Experiment 2, participants completed the same task, but moved schematic faces that were either happy or sad. In both experiments vertical attention was biased; however a significant change in mood state was produced only when schematic faces were used as stimuli in the task. The results suggest that shifting an individual’s vertical perception can influence their mood, when the task is emotionally arousing.</p>

The Influence of Spatial Position on Affect

<p>Conceptual metaphor theory posits that the physical domain (e.g. the vertical dimension) is used to understand abstract concepts (e.g. affect); creating expressions such as, “falling into a deep depression.” Previous research concerning vertical metaphors has found that people more rapidly process positive and negative words when the valence was metaphorically consistent with vertical position (Meier & Robinson, 2004) and that mood traits were metaphorically consistent with vertical attentional biases (Meier & Robinson, 2006). The purpose of the current study was to investigate the effects of vertical perceptual biases on mood; whether shifting perception could have an effect upon the emotional experience of an individual. In Experiment 1, vertical attention was manipulated by having university students move letters upwards or downwards on a computer screen, with measures of mood completed before and after the manipulation. In Experiment 2, participants completed the same task, but moved schematic faces that were either happy or sad. In both experiments vertical attention was biased; however a significant change in mood state was produced only when schematic faces were used as stimuli in the task. The results suggest that shifting an individual’s vertical perception can influence their mood, when the task is emotionally arousing.</p>

The Study of Security Priming on Avoidant Attentional Biases: Combining Microsaccadic Eye-Movement Measurement With a Dot-Probe Task

Microsaccades are small fixational eye movements that have shown to index covert attentional shifts. The present experiment combined microsaccades with performance measures from a dot-probe task to study influences of attachment security priming on the attentional biases of individuals high in attachment avoidance. Security priming is an experimental manipulation aimed at boosting felt security. Using a randomized, mixed design, we measured differences in attentional vigilance toward angry and neutral faces as a function of priming (neutral vs. secure) and attachment avoidance. Individuals high in avoidance habitually tend to withdraw from, or otherwise dismiss, emotionally salient stimuli. Here, we operationalized attentional withdrawal based on both task performance in the dot-probe task and microsaccadic movements. In addition, unlike previous studies where priming salience for the individual participant has been unclear, we used a standardized narrative method for attachment script assessment, securing an indication of how strongly each participant was primed. Dot-probe data significantly captured the link between avoidance and attentional disengagement, though from all facial stimuli (angry and neutral). Although microsaccadic movements did not capture avoidant attentional disengagement, they positively correlated to dot-probe data suggesting measurement convergence. Avoidance was associated with weaker security priming and no overall effect of priming on attention was found, indicating a need for further exploration of suitable priming methods to bypass avoidant deactivation. Our results provide a first indication that, as an implicit looking measure, microsaccadic movements can potentially reveal where early attention is directed at the exact moment of stimulus presentation.

Cardiac signals and the interference of reward on attention and inhibitory control

Interoceptive responses can act as potent cues to cognition and behavior; discrete cardiac signals can shape emotional and motivational adaptation towards reward-related cues, but also affect response inhibition. Novel addiction perspectives posit an interoceptive basis for the interplay between reward processing and inhibitory control, but there is a lack of behavioral evidence for this relationship. In this registered report we extend on previous findings to examine how reward cues interact with cardiac-facilitated attention and motor inhibition. Across two sessions, a sample of 35 social drinkers will complete a visual search task (VST) and two instances of a stop signal task (SST). In each task, alcohol or neutral cues will be presented as targets or distractors respectively. In the VST, target stimuli will be presented synchronized with participants’ cardiac phase (systole vs. diastole), examining how cardiac signals support alcohol attentional biases. In a modified SST, Go cues will appear synchronized with cardiac phase while alcohol or neutral cues appear as distractors, examining how cardiac signals increase reward interference in inhibitory control. Finally, in another instance of the SST, Stop signals will appear synchronized with cardiac phase, examining whether interoceptive signals can improve inhibitory control in the presence of reward cues. We hypothesize, at systole, higher attentional biases and interference in inhibitory control for alcohol cues, and that Stop signals can facilitate response inhibition. These results can provide evidence for the role of cardiac signaling in alcohol attentional biases and inhibitory control, extending our understanding of the interoceptive components of addiction.