ORCID Profile
0000-0002-3745-2073
Current Organisation
Monash University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Society for Neuroscience
Date: 12-12-2018
Publisher: Wiley
Date: 08-05-2023
DOI: 10.1002/JAD.12181
Abstract: Sexting among adolescents continues to garner interest across disciplines due to its prevalence in the lives of young people and the potential for extremely negative outcomes associated with the behavior. The present review aimed to integrate the existing qualitative research on adolescent sexting experiences, to provide empirically‐supported recommendations for professionals working with adolescents. A search of four databases relating to adolescent experiences of sexting was conducted, resulting in the inclusion of 28 studies in the review. Quality appraisal of these studies was completed in line with the Critical Appraisal Skills Profile qualitative checklist. Major themes in the qualitative studies were synthesized to generate recommendations for professionals. These recommendations are categorized as (a) “proactive” (enhancing positive and contextualized education and attempting to mitigate the likelihood of young people having negative experiences with sexting), (b) “responsive” (management of disclosures of distressing experiences with sexting, including image‐based sexual abuse [IBSA]), and (iii) “clinical” (increasing awareness among clinicians of pertinent issues concerning intervention with young people who are engaging in sexting, or who have been victimized by IBSA). The qualitative literature was found to provide rich insight into adolescent experiences of sexting, thus allowing for the generation of evidence‐based recommendations which are consistent with young peoples' own interests and preferences. Limitations in the existing literature base were discussed (e.g., lack of specificity in methodological reporting), and suggestions were given for future research (including the need to explore sexting experiences of LGBTQ + adolescents in more depth).
Publisher: Cold Spring Harbor Laboratory
Date: 18-07-2023
DOI: 10.1101/2023.07.15.549123
Abstract: When observers have prior knowledge about the likely outcome of their perceptual decisions, they exhibit robust behavioural biases in reaction time and choice accuracy. Computational modelling typically attributes these effects to strategic adjustments in the criterion amount of evidence required to commit to a choice alternative - usually implemented by a starting point shift - but recent work suggests that expectations may also fundamentally bias the encoding of the sensory evidence itself. Here, we recorded neural activity with EEG while participants performed a contrast discrimination task with valid, invalid, or neutral probabilistic cues across multiple testing sessions. We measured sensory evidence encoding via contrast-dependent steady-state visual-evoked potentials (SSVEP), while a read-out of criterion adjustments was provided by effector-selective mu-beta band activity over motor cortex. In keeping with prior modelling and neural recording studies, cues evoked substantial biases in motor preparation consistent with criterion adjustments, but we additionally found that the cues produced a significant modulation of the SSVEP during evidence presentation. While motor preparation adjustments were observed in the first testing session, the sensory-level effects only emerged with extended task exposure. Our results suggest that, in addition to strategic adjustments to the decision process, probabilistic information can also induce subtle biases in the encoding of the evidence itself.
Publisher: Wiley
Date: 03-01-2020
DOI: 10.1111/EJN.14652
Abstract: Contralateral delay activity (CDA) has been proposed as a pre-clinical neural marker for mild cognitive impairment (MCI). However, existing evidence is limited to one study with a small s le size (n = 24). Our aim was to extend previous work by investigating the relationship between the CDA and MCI risk in a large s le of older adults (n = 76). We used a regression approach to determine whether (and when) CDA litude predicted MCI risk, as indexed by the Montreal Cognitive Assessment (MoCA). CDA litude from ~300-500 and ~800-900 ms predicted MoCA performance. However, significant effects were only observed for specific electrodes (P5/P6 and CP3/CP4, but not PO7/PO8) and the nature of the relationship between the CDA and MoCA scores differed across time and according to set size. Bayesian regression analysis indicated partial evidence in favour of the null hypothesis (BF
Publisher: Wiley
Date: 03-2020
DOI: 10.1111/NYAS.14321
Publisher: Elsevier BV
Date: 12-2017
DOI: 10.1016/J.VISRES.2016.08.009
Abstract: Both spatial and temporal context influence our perception of visual stimuli. For instance, both nearby moving stimuli and recently viewed motion can lead to biases in the perceived direction of a moving stimulus. Due to similarities in the spatial tuning properties of these spatial and temporal context-dependent effects, it is often assumed that they share a functional goal in motion processing and arise from common neural mechanisms. However, the psychophysical evidence concerning this assumption is inconsistent. Here we used an in idual differences approach to examine the relationship between different effects of contextual modulation on perception. We reasoned that if measures of contextual modulation share a common underlying mechanism, they should exhibit a strong positive correlation across participants. To test this hypothesis, estimates of the direction aftereffect, direction repulsion, the tilt aftereffect and contrast adaptation were obtained from 54 healthy participants. Our results show pronounced interin idual differences in the effect sizes of all four tasks. Furthermore, there was a strong positive correlation between the estimates of the direction aftereffect and direction repulsion. This correlation was also evident in the threshold elevations that accompanied these repulsive biases in perceived direction. While the effects of contrast adaptation did not correlate with any of the other tasks, there was a weak, but non-significant, correlation between the direction and tilt aftereffects. These results provide evidence for common mechanisms underlying the direction aftereffect and direction repulsion.
Start Date: 2017
End Date: 2022
Funder: Irish Research Council
View Funded Activity