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https://www.readbyqxmd.com/read/27915210/functional-brain-imaging-of-walking-while-talking-an-fnirs-study
#1
Florian G Metzger, Ann-Christine Ehlis, Florian B Haeussinger, Patrick Schneeweiss, Justin Hudak, Andreas J Fallgatter, Sabrina Schneider
Since functional imaging of whole body movements is not feasible with functional magnetic resonance imaging (fMRI), the present study presents in vivo functional near-infrared spectroscopy (fNIRS) as a suitable technique to measure body movement effects on fronto-temporo-parietal cortical activation in single and dual task paradigms. Previous fNIRS applications in studies addressing whole body movements were typically limited to the assessment of prefrontal brain areas. The current study investigated brain activation in the frontal, temporal and parietal cortex of both hemispheres using functional near-infrared spectroscopy (fNIRS) with two large 4 x 4 probe-sets with 24 channels each during single and dual gait tasks...
November 30, 2016: Neuroscience
https://www.readbyqxmd.com/read/27912155/home-based-interventions-improve-trained-but-not-novel-dual-task-balance-performance-in-older-adults-a-randomized-controlled-trial
#2
Suleeporn Wongcharoen, Somporn Sungkarat, Peeraya Munkhetvit, Vipul Lugade, Patima Silsupadol
The purpose of this study was to compare the efficacy of four different home-based interventions on dual-task balance performance and to determine the generalizability of the four trainings to untrained tasks. Sixty older adults, aged 65 and older, were randomly assigned to one of four home-based interventions: single-task motor training, single-task cognitive training, dual-task motor-cognitive training, and dual-task cognitive-cognitive training. Participants received 60-min individualized training sessions, 3 times a week for 4 weeks...
November 22, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27909981/the-effect-of-working-memory-load-on-the-snarc-effect-maybe-tasks-have-a-word-to-say
#3
Zhijun Deng, Yinghe Chen, Xiaoshuang Zhu, Yanjun Li
We investigated the effect of working memory load on the SNARC (spatial-numerical association of response codes) effect under different number judgment tasks (parity judgment and magnitude comparison), using a novel dual task. Instead of exerting load over the whole block of number judgment trials, in this dual task, number judgment trials were inserted into each interstimulus interval of an n-back task, which served as the working memory load. We varied both load type (verbal and spatial) and amount (1-load, 2-load, and 3-load)...
December 1, 2016: Memory & Cognition
https://www.readbyqxmd.com/read/27899905/effects-of-individual-differences-in-working-memory-on-plan-presentational-choices
#4
Nava Tintarev, Judith Masthoff
This paper addresses research questions that are central to the area of visualization interfaces for decision support: (RQ1) whether individual user differences in working memory should be considered when choosing how to present visualizations; (RQ2) how to present the visualization to support effective decision making and processing; and (RQ3) how to evaluate the effectiveness of presentational choices. These questions are addressed in the context of presenting plans, or sequences of actions, to users. The experiments are conducted in several domains, and the findings are relevant to applications such as semi-autonomous systems in logistics...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27895563/the-attentional-dependence-of-emotion-cognition-is-variable-with-the-competing-task
#5
Cheng Chen, Kaibin Jin, Yehua Li, Hongmei Yan
The relationship between emotion and attention has fascinated researchers for decades. Many previous studies have used eye-tracking, ERP, MEG, and fMRI to explore this issue but have reached different conclusions: some researchers hold that emotion cognition is an automatic process and independent of attention, while some others believed that emotion cognition is modulated by attentional resources and is a type of controlled processing. The present research aimed to investigate this controversy, and we hypothesized that the attentional dependence of emotion cognition is variable with the competing task...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27893997/psychometric-properties-of-dual-task-balance-and-walking-assessments-for-individuals-with-neurological-conditions-a-systematic-review
#6
REVIEW
Lei Yang, Freddy Man Hin Lam, Lin Rong Liao, Mei Zhen Huang, Cheng Qi He, Marco Yiu Chung Pang
BACKGROUND: The ability of performing a balance or walking task in conjunction with a secondary cognitive or motor task, referred to as dual-task (DT) ability, is essential in daily living. While there is some evidence that DT performance is impaired in individuals with neurological conditions, using reliable and valid tools to measure DT performance is essential. This systematic review aimed to evaluate the psychometric properties of DT balance and walking assessments in individuals with different neurological conditions...
November 15, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27893270/a-link-between-attentional-function-effective-eye-movements-and-driving-ability
#7
Andrew K Mackenzie, Julie M Harris
The misallocation of driver visual attention has been suggested as a major contributing factor to vehicle accidents. One possible reason is that the relatively high cognitive demands of driving limit the ability to efficiently allocate gaze. We present an experiment that explores the relationship between attentional function and visual performance when driving. Drivers performed 2 variations of a multiple-object tracking task targeting aspects of cognition including sustained attention, dual-tasking, covert attention, and visuomotor skill...
November 28, 2016: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/27890161/primary-or-secondary-tasks-dual-task-interference-between-cyclist-hazard-perception-and-cadence-control-using-cross-modal-sensory-aids-with-rider-assistance-bike-computers
#8
Chao-Yang Yang, Cheng-Tse Wu
This research investigated the risks involved in bicycle riding while using various sensory modalities to deliver training information. To understand the risks associated with using bike computers, this study evaluated hazard perception performance through lab-based simulations of authentic riding conditions. Analysing hazard sensitivity (d') of signal detection theory, the rider's response time, and eye glances provided insights into the risks of using bike computers. In this study, 30 participants were tested with eight hazard perception tasks while they maintained a cadence of 60 ± 5 RPM and used bike computers with different sensory displays, namely visual, auditory, and tactile feedback signals...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27885976/negative-effect-of-acoustic-panels-on-listening-effort-in-a-classroom-environment
#9
Amyn M Amlani, Timothy A Russo
BACKGROUND: Acoustic panels are used to lessen the pervasive effects of noise and reverberation on speech understanding in a classroom environment. These panels, however, predominately absorb high-frequency energy important to speech understanding. Therefore, a classroom environment treated with acoustic panels might negatively influence the transmission of the target signal, resulting in an increase in listening effort exerted by the listener. PURPOSE: Acoustic panels were installed in a public school environment that did not meet the ANSI-recommended guidelines for classroom design...
November 2016: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/27878558/discrimination-of-face-gender-and-expression-under-dual-task-conditions
#10
Ana García-Gutiérrez, Luis Aguado, Verónica Romero-Ferreiro, Elisa Pérez-Moreno
In order to test whether expression and gender can be attended to simultaneously without a cost in accuracy four experiments were carried out using a dual gender-expression task with male and female faces showing different emotional expressions that were backward masked by emotionally neutral faces. In the dual-facial condition the participants had to report both the gender and the expression of the targets. In two control conditions the participant reported either the gender or the expression of the face and indicated whether a surrounding frame was continuous or discontinuous...
November 22, 2016: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/27878412/effect-of-uphill-and-downhill-walking-on-walking-performance-in-geriatric-patients-using-a%C3%A2-wheeled-walker
#11
Ulrich Lindemann, Michael Schwenk, Syn Schmitt, Michael Weyrich, Wolfgang Schlicht, Clemens Becker
BACKGROUND: Wheeled walkers are recommended to improve walking performance in older persons and to encourage and assist participation in daily life. Nevertheless, using a wheeled walker can cause serious problems in the natural environment. This study aimed to compare uphill and downhill walking with walking level in geriatric patients using a wheeled walker. Furthermore, we investigated the effect of using a wheeled walker with respect to dual tasking when walking level. METHODS: A total of 20 geriatric patients (median age 84...
November 22, 2016: Zeitschrift Für Gerontologie und Geriatrie
https://www.readbyqxmd.com/read/27861645/timing-of-reactive-stepping-among-individuals-with-sub-acute-stroke-effects-of-single-task-and-dual-task-conditions
#12
Alison Schinkel-Ivy, Andrew H Huntley, Elizabeth L Inness, Avril Mansfield
Performance decrements in balance tasks are often observed when a secondary cognitive task is performed simultaneously. This study aimed to determine whether increased cognitive load resulted in altered reactive stepping in individuals with sub-acute stroke, compared to a reactive stepping trial with no secondary task. The secondary purpose was to determine whether differences existed between the first usual-response trial, subsequent usual-response trials, and the dual-task condition. Individuals with sub-acute stroke were exposed to external perturbations to elicit reactive steps...
October 2016: Heliyon
https://www.readbyqxmd.com/read/27855415/instrumented-trail-making-task-to-differentiate-persons-with-no-cognitive-impairment-amnestic-mild-cognitive-impairment-and-alzheimer-disease-a-proof-of-concept-study
#13
He Zhou, Marwan Sabbagh, Rachel Wyman, Carolyn Liebsack, Mark E Kunik, Bijan Najafi
BACKGROUND: Objective and time-effective tools are needed to identify motor-cognitive impairment and facilitate early intervention. OBJECTIVE: We examined the feasibility, accuracy, and reliability of an instrumented trail-making task (iTMT) using a wearable sensor to identify motor-cognitive impairment among older adults. METHODS: Thirty subjects (age = 82.2 + 6.1 years, body mass index = 25.7 + 4.8, female = 43.3%) in 3 age-matched groups, 11 healthy, 10 with amnestic mild cognitive impairment (aMCI), and 9 with Alzheimer disease (AD), were recruited...
November 18, 2016: Gerontology
https://www.readbyqxmd.com/read/27854457/visual-attention-is-required-for-multiple-object-tracking
#14
Annie Tran, James E Hoffman
In the multiple object tracking task, participants attempt to keep track of a moving set of target objects embedded in an identical set of moving distractors. Depending on several display parameters, observers are usually only able to accurately track 3 to 4 objects. Various proposals attribute this limit to a fixed number of discrete indexes (Pylyshyn, 1989), limits in visual attention (Cavanagh & Alvarez, 2005), or "architectural limits" in visual cortical areas (Franconeri, 2013). The present set of experiments examined the specific role of visual attention in tracking using a dual-task methodology in which participants tracked objects while identifying letter probes appearing on the tracked objects and distractors...
December 2016: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/27854444/the-role-of-rt-carry-over-for-congruence-sequence-effects-in-masked-priming
#15
Christoph Huber-Huber, Ulrich Ansorge
The present study disentangles 2 sources of the congruence sequence effect with masked primes: congruence and response time of the previous trial (reaction time [RT] carry-over). Using arrows as primes and targets and a metacontrast masking procedure we found congruence as well as congruence sequence effects. In addition, congruence sequence effects decreased when RT carry-over was accounted for in a mixed model analysis, suggesting that RT carry-over contributes to congruence sequence effects in masked priming...
November 17, 2016: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/27847494/enactive-approach-and-dual-tasks-for-the-treatment-of-severe-behavioral-and-cognitive-impairment-in-a-person-with-acquired-brain-injury-a-case-study
#16
David Martínez-Pernía, David Huepe, Daniela Huepe-Artigas, Rut Correia, Sergio García, María Beitia
One of the most important sequela in persons who suffer from acquired brain injury is a behavioral disorder. To date, the primary approaches for the rehabilitation of this sequela are Applied Behavior Analysis, Cognitive-Behavior Therapy, and Comprehensive-Holistic Rehabilitation Programs. Despite this theoretical plurality, none of these approaches focuses on rehabilitating behavioral disorders considering the relation between affordance and environmental adaptation. To introduce this therapeutic view to neurorehabilitation, we apply the theoretical tenets of the enactive paradigm to the rehabilitation of a woman with severe behavioral and cognitive impairment...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27844494/sensorimotor-interaction-in-deaf-children-relationship-between-gait-performance-and-hearing-input-during-childhood-assessed-in-pre-lingual-cochlear-implant-users
#17
Hamlet Suarez, Rafael Alonso, Sofia Arocena, Enrique Ferreira, Cecilia San Roman, Alejo Suarez, Valeria Lapilover
CONCLUSIONS: The results suggest that auditory input is not neutral in motor skills and the complex interaction between them is generated in the earlier stages of childhood development. Objective The assessment of gait performance in pre-lingual deaf children with cochlear implant (CI). METHODS: Gait velocity (GV), using a 10-meter test, was measured by means of three inertial sensors in 10 pre-lingual cochlear implant users (CIU) (10-16 years old) in three sensory conditions: (1) cochlear implant turned on with environmental noise (EN), (2) cochlear implant turned on with EN and with cognitive dual task (DT), and (3) CI turned off (CI-OFF)...
November 15, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27825020/are-participants-reports-of-their-own-reaction-times-reliable-re-examining-introspective-limitations-in-active-and-passive-dual-task-paradigms
#18
Donna Bryce, Daniel Bratzke
There is a known introspective limitation in the Psychological Refractory Period (PRP) paradigm - people underestimate the dual-task costs on their second reaction time. The prevailing explanation for this is that conscious awareness of the second stimulus is delayed in time until the first task has been centrally processed. Here, we examined this effect in more detail, by comparing reaction time estimates after processing a PRP task, and after passively experiencing 'replays' of PRP trials. Even when participants had no dual-task processing demands, they did not accurately report the reaction time intervals using a visual analogue scale (the original reporting method of most introspective PRP experiments), but they did when placing markers that represent each event on a timeline...
November 5, 2016: Acta Psychologica
https://www.readbyqxmd.com/read/27824937/gazing-into-thin-air-the-dual-task-costs-of-movement-planning-and-execution-during-adaptive-gait
#19
Toby J Ellmers, Adam J Cocks, Michail Doumas, A Mark Williams, William R Young
We examined the effect of increased cognitive load on visual search behavior and measures of gait performance during locomotion. Also, we investigated how personality traits, specifically the propensity to consciously control or monitor movements (trait movement 'reinvestment'), impacted the ability to maintain effective gaze under conditions of cognitive load. Healthy young adults traversed a novel adaptive walking path while performing a secondary serial subtraction task. Performance was assessed using correct responses to the cognitive task, gaze behavior, stepping accuracy, and time to complete the walking task...
2016: PloS One
https://www.readbyqxmd.com/read/27821940/the-effect-of-performing-a-dual-task-on-postural-control-and-selective-attention-of-older-adults-when-stepping-backward
#20
William Wai-Nam Tsang, Vito Wai-Lok Chan, Henry Hei Wong, Tony Wai-Cheong Yip, Xi Lu
[Purpose] The purpose of the study was to investigate the postural control and cognitive performance of older adults when stepping backward with and without a concurrent cognitive task. [Subjects and Methods] Thirty young adults and twenty-eight older adults (mean age=21.3 ± 1.2 and 72.2 ± 5.7 years, respectively) were recruited. Participants were asked to step backward and then maintain a single-leg stance for 10 seconds with and without a concurrent auditory response task. The reaction time and error rate while performing the cognitive task were recorded...
October 2016: Journal of Physical Therapy Science
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