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37
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Introduction
Current institution
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September 2013 - present
September 2005 - September 2011
October 2011 - September 2013
Publications
Publications (37)
This study examines the neural basis of attentional bias toward self-relevant information in depression. Using EEG data and a lateralised image task, we investigate the N2PC response around 200ms after stimulus onset, providing insights into early attentional processes. Our analysis aims to distinguish differences in self-referential processing bet...
We provide a critical review of a foundational article in neuroscience (Boyatzis & Jack, 2018) which set out to provide the neuroscientific foundations of Coaching to the PEA, a coaching model. Our critique questions the validity of the underpinning neuroscientific research; the appropriateness of selectively stimulating specified brain networks; t...
Purpose
Head and neck cancer patients can face debilitating treatment related side-effects, resulting in requirement for support and negatively impacting on care outcomes. This study aimed to develop a digital recovery support package and assess its acceptability with head and neck cancer patients to support their information needs and assist with...
Brain computer interface (BCI) is the current trend in technology expansion as it provides an easy interface between human brain and machine. The demand for BCI based applications is growing tremendously and efforts are in progress to deploy BCI devices for real world applications. One of the widely known applications of BCI technology is rehabilit...
Prior work shows that the possibility of action to an object (visual affordance) facilitates attentional deployment. We sought to investigate the neural mechanisms underlying this modulation of attention by examining ERPs to target objects that were either congruently or incongruently gripped for their use in the presence of a congruently or incong...
Coronavirus disease 2019 (COVID-19) is likely to have long-term mental health effects on individuals who have recovered from COVID-19. Rightly, there is a global response for recognition and planning on how to deal with mental health problems for everyone impacted by the global pandemic. This does not just include COVID-19 patients but the general...
We examined whether differential self-perception influences the salience of emotional stimuli in depressive disorders, using a perceptual matching task in which geometric shapes were arbitrarily assigned to the self and an unknown other. Participants associated shapes with personal labels (e.g. 'self' or 'other'). Each geometric shape additionally...
Background: Attention bias modification (ABM) can reduce anxiety and attentional bias towards threatening stimuli, but evidence
of its usefulness as a potential intervention for socially anxious individuals has been mixed. Eye contact avoidance, a maladaptive
attentional strategy in social anxiety disorder (SAD), has yet to be targeted by ABM resea...
Image segmentation is a complex and essential task used in many computer vision applications. The problem of image segmentation can essentially be formulated as a grouping problem which in its simplest form tries to group the pixels of image into distinguished regions of interest so that further processing of the extracted regions can be achieved....
Cognitive deficits have been demonstrated in people in the euthymic phase of bipolar disorder. This cross-sectional study compared euthymic bipolar disorder patients (N=30) with never psychiatrically ill controls (N=30) on a neuropsychological test battery containing tasks of executive function, the Wisconsin Card Sorting Test (WCST), attention and...
Action on any objects provides perceptual information about the environment. There is substantial evidence that human visual system responds to action possibilities in an image as perceiving any one’s action stimulates human motor system. However very limited studies have been done to analyze the effect of object affordance during action perception...
The original version of the chapter “Analysis of Action Oriented Effects on Perceptual Process of Object Recognition Using Physiological Responses”, starting on p. 46 has been revised. The affiliations were mismatched to the author names in the XML version. The original article was corrected.
Brain computer interface is the current area of research to provide assistance to disabled persons. To cope up with the growing needs of BCI applications, this paper presents an automated classification scheme for handgrip actions on objects by using Electroencephalography (EEG) data. The presented approach focuses on investigation of classifying c...
We investigated the neural mechanisms involved in bias for food stimuli in our visual environment using event related lateralized (ERL) responses. The participants were presented with a cue (food or non-food item) to either identify or hold in working memory. Subsequently, they had to search for a target in a 2-item display where target and distrac...
Studies from our laboratory have shown that, relative to neutral objects, food-related objects kept in working memory (WM) are particularly effective in guiding attention to food stimuli (Higgs et al. in Appetite, 2012). Here, we used electrophysiological measurements to investigate the neural representation of food versus non-food items in WM. Sub...
![Figure 1. Simuli used by Riddoch et al. [12]. (a,b) Upright objects (a)...](profile/Eun-Young-Yoon/publication/256481045/figure/fig1/AS:601788843556877@1520489049826/Simuli-used-by-Riddoch-et-al-12-a-b-Upright-objects-a-objects-positioned-for_Q320.jpg)
Actions taking place in the environment are critical for our survival. We review evidence on attention to action, drawing on sets of converging evidence from neuropsychological patients through to studies of the time course and neural locus of action-based cueing of attention in normal observers. We show that the presence of action relations betwee...
We examined the effect of hand grip on object recognition by studying the modulation of the mu rhythm when participants made object decisions to objects and non-objects shown with congruent or incongruent hand-grip actions. Despite the grip responses being irrelevant to the task, mu rhythm activity on the scalp over motor and pre-motor cortex was s...
There is considerable evidence that there are anatomically and functionally distinct pathways for action and object recognition. However, little is known about how information about action and objects is integrated. This study provides fMRI evidence for task-based selection of brain regions associated with action and object processing, and on how t...
We carried out a study examining the electrophysiological responses when participants made object decisions to objects and non-objects subject to congruent and incongruent hand-grip actions. Despite the grip responses being irrelevant to the task, event-related potentials were sensitive to the handgrip. There were effects of grip congruency on both...
We discuss evidence indicating that human visual attention is strongly modulated by the potential of objects for action. The possibility of action between multiple objects enables the objects to be attended as a single group, and the fit between individual objects in a group and the action that can be performed influences responses to group members...
We discuss two commentaries that we have received on our target article (Humphreys et al., 2010). We elaborate on the evidence for action effects on extinction and discuss whether these effects occur pre or post the selection of a response. In addition, we discuss the neural basis of the effects of action relations on extinction and on the generali...
Visual evoked responses were monitored while participants searched for a target (e.g., bird) in a four-object display that could include a semantically related distractor (e.g., fish). The occurrence of both the target and the semantically related distractor modulated the N2pc response to the search display: The N2pc amplitude was more pronounced w...
The deployment of visual attention can be strongly modulated by stimuli matching the contents of working memory (WM), even when WM contents are detrimental to performance and salient bottom-up cues define the critical target [D. Soto et al. (2006)Vision Research, 46, 1010-1018]. Here we investigated the electrophysiological correlates of this early...
Working memory deficits are present in patients with mild traumatic brain injury (MTBI). Functional connectivity of different brain regions is required for adequate working memory. Brain injury is associated with disrupted connectivity due to microscopic axonal damage. In this investigation, we sought to investigate functional brain connectivity du...
We investigated whether affordances from visually presented stimuli automatically activated movement plans by measuring mu rhythm brain oscillations in response to pictures of objects and nonobjects that were or were not grasped appropriately for action. Faster RTs were observed for objects to which a congruent grip was applied compared to objects...
Abstract A 34-year-old man without a past history of any psychiatric or neurological disorder developed severe anterograde amnesia following a psychological trauma. Initial assessment of neuropsychological functions 3 months after the psychological trauma indicated severe memory deficits for acquiring new information in both verbal and visual moda...
Post-concussive symptoms reported by mild head injury (MHI) patients have been inadequately understood. Post-concussive symptoms reported by patients with MHI have so far been explained in terms of impairment in neurocognitive functions or deficits in modulation of flow of information. There are no studies that have looked into sensory gating impai...
