Haptic recognition memory and lateralisation for verbal and nonverbal shapes

Laterality effects generally refer to an advantage for verbal processing in the left hemisphere and for non-verbal processing in the right hemisphere, and are often demonstrated in memory tasks in vision and audition. In contrast, their role in haptic memory is less understood. In this study, we examined haptic recognition memory and laterality for letters and nonsense shapes. We used both upper and lower case letters, with the latter designed as more complex in shape. Participants performed a recognition memory task with the left and right hand separately. Recognition memory performance (capacity and bias-free d') was higher and response times were faster for upper case letters than for lower case letters and nonsense shapes. The right hand performed best for upper case letters when it performed the task after the left hand. This right hand/left hemisphere advantage appeared for upper case letters, but not lower case letters, which also had a lower memory capacity, probably due to their more complex spatial shape. These findings suggest that verbal laterality effects in haptic memory are not very prominent, which may be due to the haptic verbal stimuli being processed mainly as spatial objects without reaching robust verbal coding into memory.Peer reviewe

Laterality effects in the haptic discrimination of verbal and non-verbal shapes

The left hemisphere is known to be generally predominant in verbal processing and the right hemisphere in non-verbal processing. We studied whether verbal and non-verbal lateralization is present in haptics by comparing discrimination performance between letters and nonsense shapes. We addressed stimulus complexity by introducing lower case letters, which are verbally identical with upper case letters but have a more complex shape. The participants performed a same-different haptic discrimination task for upper and lower case letters and nonsense shapes with the left and right hand separately. We used signal detection theory to determine discriminability (d '), criterion (c) and we measured reaction times. Discrimination was better for the left hand for nonsense shapes, close to significantly better for the right hand for upper case letters and with no difference between the hands for lower case letters. For lower case letters, right hand showed a strong bias to respond "different", while the left hand showed faster reaction times. Our results are in agreement with the right lateralization for non-verbal material. Complexity of the verbal shape is important in haptics as the lower case letters seem to be processed as less verbal and more as spatial shapes than the upper case letters.Peer reviewe

Teachers’ External Networking: Expanding Pedagogical Practices in Finland

The purpose of this study was to examine Finnish teachers’ experiences of pedagogical activities carried out in collaboration with external stakeholders. For examining teachers’ cross-sectoral networking practices, we interviewed 63 teachers across six schools in Finland’s capital area, focusing on how external networks are utilized to enrich pedagogical practices. Content analysis was performed to examine who teachers collaborate with, how the partnerships are initiated and maintained, as well as what are the hindering factors limiting cross-sectoral collaborative activities. The analysis revealed external stakeholders at three network levels: 1) city, 2) school and 3) personal teacher level. Similarly, factors hindering cross-sectoral collaboration were related to 1) teacher’s personal 2) schools’ systemic and 3) institutional systemic factors. The results show that cross-sectoral activities are rarely collaborative in nature but appear instead as coordinated activities. Moreover, current organizational structures do not provide sufficient support to individual teachers to expand learning environments with external stakeholders.Peer reviewe

A protocol for a systematic review for perioperative pregabalin use

<p>Abstract</p> <p>Background</p> <p>Perioperative pain management has recently been revolutionized with the recognition of novel mechanisms and introduction of newer drugs. Many randomized trials have studied the use of the gabapentinoid anti-epileptic, pregabalin, in acute pain. Published systematic reviews suggest that using pregabalin for perioperative pain management may decrease analgesic requirements and pain scores, at the expense of troublesome side effects. A major limitation of the extant reviews is the lack of rigorous investigation of clinical characteristics that would maximize the benefit harms ratio in favor of surgical patients. We posit that effects of pregabalin for perioperative pain management vary by the type of surgical pain model and propose this systematic review protocol to update previous systematic reviews and investigate the heterogeneity in findings across subgroups of surgical pain models.</p> <p>Methods/Design</p> <p>Using a peer-reviewed search strategy, we will search key databases for clinical trials on perioperative pregabalin use in adults. The electronic searches will be supplemented by scanning the reference lists of included studies. No limits of language, country or year will be imposed. Outcomes will include pain; use of co-analgesia, particularly opioids; enhanced recovery; and drug-related harms. We will focus on the identification of surgical models and patient characteristics that have shown benefit and adverse effects from pregabalin.</p> <p>Two clinical experts will independently screen the studies for inclusion using eligibility criteria established <it>a priori</it>. Data extracted by the reviewers will then be verified. Publication bias will be assessed, as will risk of bias using the Cochrane Risk of Bias tool. Meta-analysis and meta-regression are planned if the studies are deemed statistically, methodologically and clinically homogenous. Evidence will be graded for its strength for a select number of outcomes.</p> <p>Discussion</p> <p>We will explore the findings of perioperative clinical trials studying the use of pregabalin for acute pain. We will comment on the implications of the findings and provide further direction for the appropriate use of pregabalin in acute pain. This protocol will attempt to bridge the growing gap between clinical experience and emerging evidence, and has the potential to aid future guideline development in the perioperative use of pregabalin.</p> <p>Trial registration</p> <p>PROSPERO registration number CRD42012002078</p

Perioperative pain management in the patient treated with opioids: continuing professional development.

International audiencePURPOSE: The objective of this continuing professional development module is to describe the perioperative anesthesia and pain management of patients taking opioids because of chronic pain or drug addiction. PRINCIPAL FINDINGS: The number of patients under opioid treatment is increasing. Pain management is problematic in these patients, because regular opioid intake is associated with mechanisms of tolerance and dependence. More recently, opioid-induced hyperalgesia phenomena have been brought to light. As a rule, the usual opioid dose should be administered with the appropriate conversions, and additional requirements should be anticipated because of the surgical procedure. Local and regional anesthesia, and multimodal analgesia are indicated whenever possible. For the patient addicted to heroin or other opioids, the perioperative period is not a suitable time to initiate weaning. CONCLUSION: The physiological and pharmacological changes caused by chronic opioid intake must be understood in order to provide optimal pain management with respect to each individual and the type of procedure