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Sensory deprivation

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https://www.readbyqxmd.com/read/27923565/sound-generator-associated-with-the-counseling-in-the-treatment-of-tinnitus-evaluation-of-the-effectiveness
#1
Andressa Vital Rocha, Maria Fernanda Capoani Garcia Mondelli
INTRODUCTION: The relations between the tinnitus and the hearing loss are due to the sensory deprivation caused by hearing loss, since this is followed by the functional and structural alteration of the auditory system as a whole. The cochlear lesions are accompanied by a reduction in the activity of the cochlear nerve, and the neural activity keeps increased in mainly all the central auditory nervous system to compensate this deficit. OBJECTIVE: This study aimed to verify the effectiveness of the sound generator (SG) associated with the counseling in the treatment of the tinnitus in individuals with and without hearing loss regarding the improvement of the nuisance through Tinnitus Handicap Inventory (THI) and Visual Analogue Scale (VAS)...
November 11, 2016: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/27915105/the-effects-of-sleep-restriction-and-sleep-deprivation-in-producing-false-memories
#2
Alex Chatburn, Mark J Kohler, Jessica D Payne, Sean P A Drummond
False memory has been claimed to be the result of an associative process of generalisation, as well as to be representative of memory errors. These can occur at any stage of memory encoding, consolidation, or retrieval, albeit through varied mechanisms. The aim of this paper is to experimentally determine: i) if cognitive dysfunction brought about by sleep loss at the time of stimulus encoding can influence false memory production; and ii) whether this relationship holds across sensory modalities. Subjects undertook both the Deese-Roedigger-McDermott (DRM) false memory task and a visual task designed to produce false memories...
November 30, 2016: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27895559/reorganization-of-visual-callosal-connections-following-alterations-of-retinal-input-and-brain-damage
#3
REVIEW
Laura Restani, Matteo Caleo
Vision is a very important sensory modality in humans. Visual disorders are numerous and arising from diverse and complex causes. Deficits in visual function are highly disabling from a social point of view and in addition cause a considerable economic burden. For all these reasons there is an intense effort by the scientific community to gather knowledge on visual deficit mechanisms and to find possible new strategies for recovery and treatment. In this review, we focus on an important and sometimes neglected player of the visual function, the corpus callosum (CC)...
2016: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/27889097/axonal-degeneration-is-regulated-by-a-transcriptional-program-that-coordinates-expression-of-pro-and-anti-degenerative-factors
#4
Maya Maor-Nof, Erez Romi, Hadas Sar Shalom, Valeria Ulisse, Calanit Raanan, Aviv Nof, Dena Leshkowitz, Roland Lang, Avraham Yaron
Developmental neuronal cell death and axonal elimination are controlled by transcriptional programs, of which their nature and the function of their components remain elusive. Here, we identified the dual specificity phosphatase Dusp16 as part of trophic deprivation-induced transcriptome in sensory neurons. Ablation of Dusp16 enhanced axonal degeneration in response to trophic withdrawal, suggesting that it has a protective function. Moreover, axonal skin innervation was severely reduced while neuronal elimination was increased in the Dusp16 knockout...
November 21, 2016: Neuron
https://www.readbyqxmd.com/read/27877118/contexts-paired-with-junk-food-impair-goal-directed-behavior-in-rats-implications-for-decision-making-in-obesogenic-environments
#5
Michael D Kendig, Ambrose M K Cheung, Joel S Raymond, Laura H Corbit
The high prevalence of obesity and related metabolic diseases calls for greater understanding of the factors that drive excess energy intake. Calorie-dense palatable foods are readily available and often are paired with highly salient environmental cues. These cues can trigger food-seeking and consumption in the absence of hunger. Here we examined the effects of palatable food-paired environmental cues on control of instrumental food-seeking behavior. In Experiment 1, adult male rats received exposures to one context containing three "junk" foods (JFs context) and another containing chow (Chow context)...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27877116/are-supramodality-and-cross-modal-plasticity-the-yin-and-yang-of-brain-development-from-blindness-to-rehabilitation
#6
Luca Cecchetti, Ron Kupers, Maurice Ptito, Pietro Pietrini, Emiliano Ricciardi
Research in blind individuals has primarily focused for a long time on the brain plastic reorganization that occurs in early visual areas. Only more recently, scientists have developed innovative strategies to understand to what extent vision is truly a mandatory prerequisite for the brain's fine morphological architecture to develop and function. As a whole, the studies conducted to date in sighted and congenitally blind individuals have provided ample evidence that several "visual" cortical areas develop independently from visual experience and do process information content regardless of the sensory modality through which a particular stimulus is conveyed: a property named supramodality...
2016: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/27875697/sensory-development-brief-visual-deprivation-alters-audiovisual-interactions
#7
Stephen G Lomber, Blake E Butler
Two recent studies have independently demonstrated that short periods of visual deprivation early in human development can have long-term functional consequences on sensory perception and on the balance between auditory and visual attention.
November 21, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27866800/neural-architecture-of-hunger-dependent-multisensory-decision-making-in-c-%C3%A2-elegans
#8
D Dipon Ghosh, Tom Sanders, Soonwook Hong, Li Yan McCurdy, Daniel L Chase, Netta Cohen, Michael R Koelle, Michael N Nitabach
Little is known about how animals integrate multiple sensory inputs in natural environments to balance avoidance of danger with approach to things of value. Furthermore, the mechanistic link between internal physiological state and threat-reward decision making remains poorly understood. Here we confronted C. elegans worms with the decision whether to cross a hyperosmotic barrier presenting the threat of desiccation to reach a source of food odor. We identified a specific interneuron that controls this decision via top-down extrasynaptic aminergic potentiation of the primary osmosensory neurons to increase their sensitivity to the barrier...
November 12, 2016: Neuron
https://www.readbyqxmd.com/read/27832523/ovariectomy-induced-mitochondrial-oxidative-stress-apoptosis-and-calcium-ion-influx-through-trpa1-trpm2-and-trpv1-are-prevented-by-17%C3%AE-estradiol-tamoxifen-and-raloxifene-in-the-hippocampus-and-dorsal-root-ganglion-of-rats
#9
Yener Yazğan, Mustafa Nazıroğlu
Relative 17β-estradiol (E2) deprivation and excessive production of mitochondrial oxygen free radicals (OFRs) with a high amount of Ca(2+) influx TRPA1, TRPM2, and TRPV1 activity is one of the main causes of neurodegenerative disease in postmenopausal women. In addition to the roles of tamoxifen (TMX) and raloxifene (RLX) in cancer and bone loss treatments, regulator roles in Ca(2+) influx and mitochondrial oxidative stress in neurons have not been reported. The aim of this study was to evaluate whether TMX and RLX interactions with TRPA1, TRPM2, and TRPV1 in primary hippocampal (HPC) and dorsal root ganglion (DRG) neuron cultures of ovariectomized (OVX) rats...
November 10, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27785548/tactile-short-term-memory-in-sensory-deprived-individuals
#10
Costanza Papagno, Giovanna Minniti, Giulia C Mattavelli, Lara Mantovan, Carlo Cecchetto
To verify whether loosing a sense or two has consequences on a spared sensory modality, namely touch, and whether these consequences depend on practice or are biologically determined, we investigated 13 deafblind participants, 16 deaf participants, 15 blind participants, and 13 matched normally sighted and hearing controls on a tactile short-term memory task, using checkerboard matrices of increasing length in which half of the squares were made up of a rough texture and half of a smooth one. Time of execution of a fixed matrix, number of correctly reproduced matrices, largest matrix correctly reproduced and tactile span were recorded...
October 26, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27757139/charles-bonnet-syndrome-following-trans-sphenoidal-adenomectomy-without-optic-nerve-atrophy
#11
Jang-Ho Park, Joon-Ho Ahn, Jun-Bum Park, Soohyun Joe
Charles Bonnet syndrome (CBS) can develop after trans-sphenoidal adenomectomy (TSA); however, the neural mechanisms remain unknown. Sensory deprivation and releasing phenomenon are both hypothetical explanations for this condition; however, there is no definite evidence that strongly supports either supposition. We report the first case of CBS after TSA without optic nerve atrophy. Postoperatively, the patient's vision seemed to be relatively well preserved, apart from the left-side hemianopsia in the right eye...
September 2016: Psychiatry Investigation
https://www.readbyqxmd.com/read/27732604/chronic-low-quality-sleep-impairs-postural-control-in-healthy-adults
#12
Fabianne Furtado, Bruno da Silva B Gonçalves, Isabela Lopes Laguardia Abranches, Ana Flávia Abrantes, Arturo Forner-Cordero
The lack of sleep, both in quality and quantity, is an increasing problem in modern society, often related to workload and stress. A number of studies have addressed the effects of acute (total) sleep deprivation on postural control. However, up to date, the effects of chronic sleep deficits, either in quantity or quality, have not been analyzed. Thirty healthy adults participated in the study that consisted of registering activity with a wrist actigraph for more than a week before performing a series of postural control tests...
2016: PloS One
https://www.readbyqxmd.com/read/27729128/sensory-deprivation-due-to-otitis-media-episodes-in-early-childhood-and-its-effect-at-later-age-a-psychoacoustic-and-speech-perception-measure
#13
Hemanth Narayan Shetty, Vishal Koonoor
BACKGROUND: Past research has reported that children with repeated occurrences of otitis media at an early age have a negative impact on speech perception at a later age. The present study necessitates documenting the temporal and spectral processing on speech perception in noise from normal and atypical groups. OBJECTIVES: The present study evaluated the relation between speech perception in noise and temporal; and spectral processing abilities in children with normal and atypical groups...
November 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27720624/starvation-induced-depotentiation-of-bitter-taste-in-drosophila
#14
Emily E LeDue, Kevin Mann, Ellen Koch, Bonnie Chu, Roslyn Dakin, Michael D Gordon
Nutrient deprivation can lead to dramatic changes in feeding behavior, including acceptance of foods that are normally rejected. In flies, this behavioral shift depends in part on reciprocal sensitization and desensitization of sweet and bitter taste, respectively. However, the mechanisms for bitter taste modulation remain unclear. Here, we identify a set of octopaminergic/tyraminergic neurons, named OA-VLs, that directly modulate bitter sensory neuron output in response to starvation. OA-VLs are in close proximity to bitter sensory neuron axon terminals and show reduced tonic firing following starvation...
October 1, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27707809/whisker-row-deprivation-affects-the-flow-of-sensory-information-through-rat-barrel-cortex
#15
Vincent Jacob, Akinori Mitani, Taro Toyoizumi, Kevin Fox
Whisker trimming causes substantial reorganisation of neuronal response properties in barrel cortex. However, little is known about experience-dependent rerouting of sensory processing following sensory deprivation. To address this, we performed in vivo intracellular recordings from L2/3, L4, L5-regular-spiking (L5RS), and L5-intrinsic-bursting (L5IB) neurones and measured their multi-whisker receptive field at the level of spiking activity, membrane potential and synaptic conductance before and after sensory deprivation...
October 5, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27702713/future-food
#16
Mark L Wahlqvist
Food systems have changed markedly with human settlement and agriculture, industrialisation, trade, migration and now the digital age. Throughout these transitions, there has been a progressive population explosion and net ecosystem loss and degradation. Climate change now gathers pace, exacerbated by ecological dysfunction. Our health status has been challenged by a developing people-environment mismatch. We have regarded ecological conquest and innovative technology as solutions, but have not understood how ecologically dependent and integrated we are...
December 2016: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27699413/on-the-maintenance-of-normal-ocular-dominance-and-a-possible-mechanism-underlying-refractive-adaptation
#17
Jiawei Zhou, Lixia Feng, Huimin Lin, Robert F Hess
Purpose: Do humans with uncorrected anisometropia who have not developed anisometropic amblyopia exhibit a shift in ocular dominance nonetheless, reflecting a more subtle form of deprivation? Also, is such a change in dominance, if it occurs, permanent or could it be rectified by an extended period of optical correction? Methods: A total of 25 normal controls (27.5 ± 2.1 years; mean ± SD); 28 anisometropes (20.7 ± 5.6 years) who were fully corrected for more than 16 weeks prior to this investigation; and 24 anisometropes who had never been corrected (21...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27690116/prenatal-ethanol-exposure-and-whisker-clipping-disrupt-ultrasonic-vocalizations-and-play-behavior-in-adolescent-rats
#18
Jaylyn Waddell, Tianqi Yang, Eric Ho, Kristen A Wellmann, Sandra M Mooney
Prenatal ethanol exposure can result in social deficits in humans and animals, including altered social interaction and poor communication. Rats exposed to ethanol prenatally show reduced play fighting, and a combination of prenatal ethanol exposure and neonatal whisker clipping further reduces play fighting compared with ethanol exposure alone. In this study, we explored whether expression of hedonic ultrasonic vocalizations (USVs) correlated with the number of playful attacks by ethanol-exposed rats, rats subjected to postnatal sensory deprivation by whisker clipping or both compared to control animals...
2016: Brain Sciences
https://www.readbyqxmd.com/read/27685093/oral-cooling-and-carbonation-increase-the-perception-of-drinking-and-thirst-quenching-in-thirsty-adults
#19
Catherine Peyrot des Gachons, Julie Avrillier, Michael Gleason, Laure Algarra, Siyu Zhang, Emi Mura, Hajime Nagai, Paul A S Breslin
Fluid ingestion is necessary for life, and thirst sensations are a prime motivator to drink. There is evidence of the influence of oropharyngeal stimulation on thirst and water intake in both animals and humans, but how those oral sensory cues impact thirst and ultimately the amount of liquid ingested is not well understood. We investigated which sensory trait(s) of a beverage influence the thirst quenching efficacy of ingested liquids and the perceived amount ingested. We deprived healthy individuals of liquid and food overnight (> 12 hours) to make them thirsty...
2016: PloS One
https://www.readbyqxmd.com/read/27683915/conductive-hearing-loss-has-long-lasting-structural-and-molecular-effects-on-presynaptic-and-postsynaptic-structures-of-auditory-nerve-synapses-in-the-cochlear-nucleus
#20
Cheryl Clarkson, Flora M Antunes, Maria E Rubio
UNLABELLED: Sound deprivation by conductive hearing loss increases hearing thresholds, but little is known about the response of the auditory brainstem during and after conductive hearing loss. Here, we show in young adult rats that 10 d of monaural conductive hearing loss (i.e., earplugging) leads to hearing deficits that persist after sound levels are restored. Hearing thresholds in response to clicks and frequencies higher than 8 kHz remain increased after a 10 d recovery period. Neural output from the cochlear nucleus measured at 10 dB above threshold is reduced and followed by an overcompensation at the level of the lateral lemniscus...
September 28, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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