Biological Psychology

Behavioural and ERP summary data sets for Experiments 1 and 2

EEG data associated with the two experiments described in the paper. Neuroscan raw format (see methods section). The corresponding author can be contacted for other formats (eeglab .set) or questions related to the data (e.g. markers).

This data set was obtained from a study looking at the association between plasma ghrelin and gambling behaviour. Subjects were either fasted or not, and later were brought to a lab with either gambling or no gambling cues. Our data suggest that the cues increase ghrelin, and that, overall, regardless of the manipulation, ghrelin concentrations can predict gambling perseverance.

The auditory evoked potential amplitudes used in analysis of main effects and interactions.

Data from: The temporal effect of uncertain context on the perceptual processing of painful and non-painful stimulation. This dataset includes the summarized data for further analysis. data_all_final.savSummarized data for further analysis. It contains demography data, behavioral data (subjective ratings to pain intensity, unpleasantness, anxiety), ERP data (mean N1/P2/LPP amplitudes of ROIs) and EEG Time-frequency data (mean energies of ROIs).allsub_ERP.matSummarized ERP data. "allsub_U_on": Uncertain Painful trials"allsub_P_on": Certain Painful trials"allsub_U_off": Uncertain Non-painful trials"allsub_N_off": Certain Non-painful trialsallsub_TF_P and U block.matSummarized TF data without Certain Non-painful trials."allsub_U_on_WF": Uncertain Painful trials"allsub_P_on_WF": Certain Painful trials"allsub_U_off_WF": Uncertain Non-painful trialsallsub_TF_N block.matSummarized TF data of Certain Non-painful trials.

Supplementary files for article Sedentary behaviour, physical activity and psychobiological stress reactivity: a systematic review. Background Sedentary behaviour, physical activity, and psychobiological reactivity to acute psychological stress are independent risk factors for cardiovascular disease. Sedentary behaviour and physical activity influence autonomic, haemodynamic, and inflammatory pathways under resting conditions, and these pathways become activated under acute psychological stress. However, it is unclear whether sedentary behaviour and physical activity relate to psychobiological responses to stress. Thus, the aim of this study is to systematically review sedentary behaviour and physical activity in the context of psychobiological reactivity to acute psychological stress. Methods Sedentary behaviour, physical activity and psychobiological stress reactivity search terms were combined, and several databases were searched in duplicate. Eligibility criteria included: (1) a validated measure of sedentary behaviour/physical activity; (2) cardiovascular, inflammatory, neuroendocrine, or respiratory markers measured at rest and in response to laboratory-induced acute psychological stress. Results 6084 articles were screened, with 11 included in a narrative synthesis. No studies measured postural components of sedentary behaviour, but 2/4 studies found that markers of sedentary behaviour (e.g., physical inactivity) were associated with elevated heart rate, dysregulated heart rate variability, or lowered cortisol responses to stress. Higher volumes of physical activity were linked to lower HR, cortisol, or immune responses to stress in 4/7 studies. Conclusions Extensive methodological variability precludes conclusions from being drawn. This review should be used to guide a more homogeneous and gold-standard literature, which accounts for postural components of sedentary behaviour using inclinometery, and the whole physical activity intensity spectrum using universal and reproducible approaches.

Much psychological research uses pupil diameter measurements for investigating the cognitive and emotional effects of visual stimuli. A potential problem is that accommodating at a nearby point constricts the pupil. This study examined to what extent accommodation is a confounder in pupillometry research. Participants solved multiplication problems at different distances (Experiment 1) and looked at line drawings with different monocular depth cues (Experiment 2) while their pupil diameter, refraction, and vergence angle were recorded using a photorefractor. Experiment 1 showed that the pupils dilated while performing the multiplications, for all presentation distances. Pupillary constriction due to accommodation was not strong enough to override pupil dilation due to cognitive load. Experiment 2 showed that monocular depth cues caused a small shift in refraction in the expected direction. We conclude that, for the young student sample we used, pupil diameter measurements are not substantially affected by accommodation.

Much psychological research uses pupil diameter measurements for investigating the cognitive and emotional effects of visual stimuli. A potential problem is that accommodating at a nearby point constricts the pupil. This study examined to what extent accommodation is a confounder in pupillometry research. Participants solved multiplication problems at different distances (Experiment 1) and looked at line drawings with different monocular depth cues (Experiment 2) while their pupil diameter, refraction, and vergence angle were recorded using a photorefractor. Experiment 1 showed that the pupils dilated while performing the multiplications, for all presentation distances. Pupillary constriction due to accommodation was not strong enough to override pupil dilation due to cognitive load. Experiment 2 showed that monocular depth cues caused a small shift in refraction in the expected direction. We conclude that, for the young student sample we used, pupil diameter measurements are not substantially affected by accommodation.

This dataset includes skin conductance response (SCR) measurements for each of 61 healthy unmedicated participants (30 males and 31 females, misprinted in Bach et al. 2015, aged 25.7 +/- 4.5 years) in response to the 45 least arousing neutral IAPS pictures, presented for 1 s each in 3 blocks, while listening to regular or random distractor sounds, as described in Bach et al. (2015). Inter stimulus interval was randomly determined as 7.65 s, 9 s, or 10.35 s. Each recording starts with a 2-minute baseline interval.

This dataset includes skin conductance response (SCR) measurements for each of 42 healthy unmedicated participants (21 males and 21 females aged 25.2 +/- 4.0 years) in response to 38 face photographs (modified from the Karolinska Directed Emotional Faces set, KDEF), each presented once with angry, neutral, and fearful expression for 1 s each. Meanwhile, participants were listening to regular or random distractor sounds, as described in Bach et al. (2015). ITI was selected randomly on each trial from 7.5 s, 9.0 s, or 10.5 s (misprinted in the publications), plus a variable delay of around 0.1 s for image loading. The experiment was preceded by a 2-minute resting period and divided into 3 blocks, separated by resting periods. Each resting period begins and ends with an event marker in the SCR recordings.