keyword
MENU ▼
Read by QxMD icon Read
search

memory implant

keyword
https://www.readbyqxmd.com/read/29342056/-product-versus-process-measures-in-assessing-speech-recognition-outcomes-in-adults-with-cochlear-implants
#1
Aaron C Moberly, Irina Castellanos, Kara J Vasil, Oliver F Adunka, David B Pisoni
HYPOTHESES: 1) When controlling for age in postlingual adult cochlear implant (CI) users, information-processing functions, as assessed using "process" measures of working memory capacity, inhibitory control, information-processing speed, and fluid reasoning, will predict traditional "product" outcome measures of speech recognition. 2) Demographic/audiologic factors, particularly duration of deafness, duration of CI use, degree of residual hearing, and socioeconomic status, will impact performance on underlying information-processing functions, as assessed using process measures...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29330327/signal-complexity-of-human-intracranial-eeg-tracks-successful-associative-memory-formation-across-individuals
#2
Timothy C Sheehan, Vishnu Sreekumar, Sara K Inati, Kareem A Zaghloul
Memory performance is highly variable between individuals. Most studies examining human memory, however, have largely focused on the neural correlates of successful memory formation within individuals, rather than the differences between them. As such, what gives rise to this variability is poorly understood. Here, we examined intracranial EEG (iEEG) recordings captured from 43 participants (23 male) implanted with subdural electrodes for seizure monitoring as they performed a paired-associates verbal memory task...
January 12, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29306970/preoperative-decolonization-to-reduce-infections-in-urgent-lower-extremity-repairs
#3
Daniel S Urias, Merin Varghese, Thomas Simunich, Shawna Morrissey, Russell Dumire
PURPOSE: Medical implants and surgical site infections (SSIs) can be a burden on both patients and healthcare systems with a significant rise in morbidity, mortality and costs. Preoperatively, our practice of a chlorohexidine gluconate (CHG) washcloth bath or solution shower was supplemented with nasal painting using povidone-iodine skin and nasal antiseptic (PI-SNA). We sought to measure the effectiveness in reducing SSIs in patients undergoing repair of lower extremity fractures. METHODS: A retrospective review of trauma patients undergoing orthopedic operations conducted at Conemaugh Memorial Medical Center from 10/1/2012 through 9/30/2016...
January 6, 2018: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29291421/activation-of-the-cannabinoid-system-in-the-nucleus-accumbens-affects-effort-based-decision-making
#4
Zahra Fatahi, Abbas Haghparast
Effort-based decision making addresses how we make an action choice based on an integration of action and goal values. The nucleus accumbens (NAc) is implicated in allowing an animal to overcome effort constraints to obtain greater benefits, and it has been previously shown that cannabis derivatives may affect such processes. Therefore, in this study, we intend to evaluate the involvement of the cannabinoid system in the entire NAc on effort-based decision making. Rats were trained in a T-maze cost-benefit decision making the task in which they could choose either to climb a barrier to obtain a large reward in one arm or run into the other arm without a barrier to obtaining a small reward...
December 29, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29284340/on-the-advantage-of-autobiographical-memory-pliability-implantation-of-positive-self-defining-memories-reduces-trait-anxiety
#5
Veronika V Nourkova, Darya A Vasilenko
This paper is devoted to the mechanism of the positive construction of autobiographical memory. Positive construction consists of the spontaneous transformation of memories in the direction of the subjective enhancement of self-competence in past activities to anticipate improvement over time. We speculated that trait anxiety may indicate a failure to exhibit this mechanism that results in a deficit of affirmative self-esteem. We hypothesised that the implantation of positive self-defining memories in anxiety-evoking domains would decrease trait anxiety...
December 28, 2017: Memory
https://www.readbyqxmd.com/read/29249283/single-neuron-representation-of-memory-strength-and-recognition-confidence-in-left-human-posterior-parietal-cortex
#6
Ueli Rutishauser, Tyson Aflalo, Emily R Rosario, Nader Pouratian, Richard A Andersen
The human posterior parietal cortex (PPC) is thought to contribute to memory retrieval, but little is known about its specific role. We recorded single PPC neurons of two human tetraplegic subjects implanted with microelectrode arrays, who performed a recognition memory task. We found two groups of neurons that signaled memory-based choices. Memory-selective neurons preferred either novel or familiar stimuli, scaled their response as a function of confidence, and signaled subjective choices regardless of truth...
December 11, 2017: Neuron
https://www.readbyqxmd.com/read/29246746/chronic-deep-brain-stimulation-in-an-alzheimer-s-disease-mouse-model-enhances-memory-and-reduces-pathological-hallmarks
#7
Amandeep Mann, Elise Gondard, Davide Tampellini, Jorge A T Milsted, Desiree Marillac, Clement Hamani, Suneil K Kalia, Andres M Lozano
BACKGROUND: Alzheimer's disease (AD) is a progressive degenerative disorder that currently remains extremely disabling. Recent work has shown that deep brain stimulation (DBS) has promising effects in AD patients. In parallel to the clinical trials, we investigated the impact of chronic DBS in 3xTg mice, a well-established animal model of AD. METHODS: AD mice were assigned to control (Cont), non-stimulation (NS) and stimulation (DBS) groups, along with age matched wild type controls (WT-Cont)...
November 23, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29243163/computational-analysis-of-the-utilisation-of-the-shape-memory-effect-and-balloon-expansion-in-fully-polymeric-stent-deployment
#8
Anna C Bobel, Peter E McHugh
The desire to overcome the limitations of cardiovascular metal stents is driven by the global clinical need to improve patient outcomes. The opportunity for fully polymeric stents made from materials like Poly-L-lactide Acid (PLLA) is significant. Unfortunately, this potential has not been fully realised due to pressing concerns regarding the radial strength and recoil associated with material stiffness and recoverability. In an effort to achieve effective and reliable performance, it is conceivable that a certain degree of shape memory effect (SME) could be beneficial in order to improve on high recoil associated with fully polymeric stents...
December 14, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29205095/lexical-access-ability-and-cognitive-predictors-of-speech-recognition-in-noise-in-adult-cochlear-implant-users
#9
Marre W Kaandorp, Cas Smits, Paul Merkus, Joost M Festen, S Theo Goverts
Not all of the variance in speech-recognition performance of cochlear implant (CI) users can be explained by biographic and auditory factors. In normal-hearing listeners, linguistic and cognitive factors determine most of speech-in-noise performance. The current study explored specifically the influence of visually measured lexical-access ability compared with other cognitive factors on speech recognition of 24 postlingually deafened CI users. Speech-recognition performance was measured with monosyllables in quiet (consonant-vowel-consonant [CVC]), sentences-in-noise (SIN), and digit-triplets in noise (DIN)...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/29203949/simultaneous-wireless-power-transfer-and-data-communication-using-synchronous-pulse-controlled-load-modulation
#10
Shitong Mao, Hao Wang, Chunbo Zhu, Zhi-Hong Mao, Mingui Sun
Wireless Power Transfer (WPT) and wireless data communication are both important problems of research with various applications, especially in medicine. However, these two problems are usually studied separately. In this work, we present a joint study of both problems. Most medical electronic devices, such as smart implants, must have both a power supply to allow continuous operation and a communication link to pass information. Traditionally, separate wireless channels for power transfer and communication are utilized, which complicate the system structure, increase power consumption and make device miniaturization difficult...
October 2017: Measurement: Journal of the International Measurement Confederation
https://www.readbyqxmd.com/read/29201606/a-3d-printed-implantable-device-for-voiding-the-bladder-using-shape-memory-alloy-sma-actuators
#11
Faezeh Arab Hassani, Wendy Yen Xian Peh, Gil Gerald Lasam Gammad, Roshini Priya Mogan, Tze Kiat Ng, Tricia Li Chuen Kuo, Lay Guat Ng, Percy Luu, Shih-Cheng Yen, Chengkuo Lee
Underactive bladder or detrusor underactivity (DU) is defined as a reduction of contraction strength or duration of the bladder wall. Despite the serious healthcare implications of DU, there are limited solutions for affected individuals. A flexible 3D printed implantable device driven by shape memory alloys (SMA) actuators is presented here for the first time to physically contract the bladder to restore voluntary control of the bladder for individuals suffering from DU. This approach is used initially in benchtop experiments with a rubber balloon acting as a model for the rat bladder to verify its potential for voiding, and that the operating temperatures are safe for the eventual implantation of the device in a rat...
November 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29199226/imaging-of-sialidase-activity-and-its-clinical-application
#12
Takashi Suzuki
Sialidase releases sialic acid residues from the ends of sugar chains. The sialidases are involved in many physiological processes including cell differentiation and proliferation and immune function as well as pathophysiological conditions such as various human cancers and infections. Therefore visualization of sialidase activities with high sensitivity could provide valuable insights into these isozyme's activity. We developed novel fluorescent sialidase substrates, 2-benzothiazol-2-yl-phenol derivatives-based N-acetylneuraminic acid (Neu5Ac) (BTP-Neu5Ac) substrates, for highly sensitive and specific visualization of sialidase activity in living mammalian tissues and virus-infected cells...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29199073/theta-oscillations-in-the-human-medial-temporal-lobe-during-real-world-ambulatory-movement
#13
Zahra M Aghajan, Peter Schuette, Tony A Fields, Michelle E Tran, Sameed M Siddiqui, Nicholas R Hasulak, Thomas K Tcheng, Dawn Eliashiv, Emily A Mankin, John Stern, Itzhak Fried, Nanthia Suthana
The theta rhythm-a slow (6-12 Hz) oscillatory component of the local field potential-plays a critical role in spatial navigation and memory by coordinating the activity of neuronal ensembles within the medial temporal lobe (MTL). Although theta has been extensively studied in freely moving rodents, its presence in humans has been elusive and primarily investigated in stationary subjects. Here we used a unique clinical opportunity to examine theta within the human MTL during untethered, real-world ambulatory movement...
November 21, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29189431/psychosocial-outcomes-in-long-term-cochlear-implant-users
#14
Irina Castellanos, William G Kronenberger, David B Pisoni
OBJECTIVES: The objectives of this study were to investigate psychosocial outcomes in a sample of prelingually deaf, early-implanted children, adolescents, and young adults who are long-term cochlear implant (CI) users and to examine the extent to which language and executive functioning predict psychosocial outcomes. DESIGN: Psychosocial outcomes were measured using two well-validated, parent-completed checklists: the Behavior Assessment System for Children and the Conduct Hyperactive Attention Problem Oppositional Symptom...
November 20, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29167726/effects-of-hydroalcoholic-extract-of-soy-on-learning-memory-and-synaptic-plasticity-deficits-induced-by-seizure-in-ovariectomized-rats
#15
Mehdi Khodamoradi, Majid Asadi-Shekaari, Saeed Esmaeili-Mahani, Fariba Sharififar, Vahid Sheibani
Introduction: Previous studies have shown that seizure can induce cognitive impairment. On the other hand, soy phytoestrogens, which are mainly found in soybean (Glycine max (L.) Merr.), have beneficial effects on the nervous system. However, little is known about their probable effects on seizure. The present study aimed to examine the probable effects of soy extract, containing the phytoestrogen genistein on seizure-induced cognitive and synaptic plasticity impairment in Ovariectomized (OVX) rats...
September 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/29154281/gradual-cerebral-hypoperfusion-impairs-fear-conditioning-and-object-recognition-learning-and-memory-in-mice-potential-roles-of-neurodegeneration-and-cholinergic-dysfunction
#16
Jogender Mehla, Sean Lacoursiere, Emily Stuart, Robert J McDonald, Majid H Mohajerani
In the present study, male C57BL/6J mice were subjected to gradual cerebral hypoperfusion by implanting an ameroid constrictor (AC) on the left common carotid artery (CCA) and a stenosis on the right CCA. In the sham group, all surgical procedures were kept the same except no AC was implanted and stenosis was not performed. One month following the surgical procedures, fear conditioning and object recognition tests were conducted to evaluate learning and memory functions and motor functions were assessed using a balance beam test...
November 14, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29151638/polyhydroxyalkanoate-production-and-degradation-patterns-in-bacillus-species
#17
Subhasree Ray, Vipin Chandra Kalia
Bacteria under stress conditions of excess of carbon (C) and limitations of nutrients divert its metabolism towards C storage as energy reservoir-polyhydroxyalkanoate (PHA). Different Bacillus species-B. cereus and B. thuringiensis, were monitored to produce PHA from different C sources-glucose, crude glycerol and their combination at 37 °C for period up to 192 h. PHA production and its composition was found to vary with feed and bacterial strains. PHA production on crude glycerol continued to increase up to 120 h, reaching a maximum of 2725 mg/L with an effective yield of 71% of the dry cell mass...
December 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/29151273/post-treatment-with-methylene-blue-is-effective-against-delayed-encephalopathy-after-acute-carbon-monoxide-poisoning
#18
Ningjun Zhao, Pengchong Liang, Xiaoying Zhuo, Chenglei Su, Xuemei Zong, Bingnan Guo, Han Dong, Xianliang Yan, Shuqun Hu, Quanguang Zhang, Xu Tie
Delayed encephalopathy after acute carbon monoxide (CO) poisoning (DEACMP) is the most severe and clinically intractable complication that occurs following acute carbon monoxide poisoning. Unfortunately, the mechanism of DEACMP is still vague. Growing evidence indicates that delayed cerebral damage following CO poisoning is related to oxidative stress, abnormal neuro-inflammation, apoptosis and immune-mediated injury. Our recent report indicated that methylene blue (MB) may be a promising therapeutic agent in the prevention of neuronal cell death and cognitive deficits following transient global cerebral ischaemia (GCI)...
November 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29126650/plasticity-in-the-auditory-system
#19
REVIEW
Dexter R F Irvine
Over the last 30 years a wide range of manipulations of auditory input and experience have been shown to result in plasticity in auditory cortical and subcortical structures. The time course of plasticity ranges from very rapid stimulus-specific adaptation to longer-term changes associated with, for example, partial hearing loss or perceptual learning. Evidence for plasticity as a consequence of these and a range of other manipulations of auditory input and/or its significance is reviewed, with an emphasis on plasticity in adults and in the auditory cortex...
October 31, 2017: Hearing Research
https://www.readbyqxmd.com/read/29121171/recognition-and-comprehension-of-narrow-focus-by-young-adults-with-prelingual-hearing-loss-using-hearing-aids-or-cochlear-implants
#20
Osnat Segal, Liat Kishon-Rabin
Purpose: The stressed word in a sentence (narrow focus [NF]) conveys information about the intent of the speaker and is therefore important for processing spoken language and in social interactions. The ability of participants with severe-to-profound prelingual hearing loss to comprehend NF has rarely been investigated. The purpose of this study was to assess the recognition and comprehension of NF by young adults with prelingual hearing loss compared with those of participants with normal hearing (NH)...
November 9, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
keyword
keyword
57003
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"