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https://www.readbyqxmd.com/read/28077710/sensory-flow-as-a-basis-for-a-novel-distance-cue-in-freely-behaving-electric-fish
#1
Volker Hofmann, Juan Ignacio Sanguinetti-Scheck, Leonel Gómez-Sena, Jacob Engelmann
: The sensory input that an animal receives is directly linked to its motor activity. Behavior thus enables animals to influence their sensory input, a concept referred to as active sensing. How such behavior can serve as a scaffold for generating sensory information is of general scientific interest. In this article, we investigate how behavior can shape sensory information by using some unique features of the sensorimotor system of the weakly electric fish. Based on quantitative behavioral characterizations and computational reconstruction of sensory input, we show how electrosensory flow is actively created during highly patterned, spontaneous behavior in Gnathonemus petersii...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28069927/impact-of-altered-cholinergic-tones-on-the-neurovascular-coupling-response-to-whisker-stimulation
#2
Clotilde Lecrux, Claire H Sandoe, Sujaya Neupane, Pascal Kropf, Xavier Toussay, Xin-Kang Tong, María Lacalle-Aurioles, Amir Shmuel, Edith Hamel
Brain imaging techniques that use vascular signals to map changes in neuronal activity rely on the coupling between electrophysiology and hemodynamics, a phenomenon referred to "neurovascular coupling" (NVC). It is unknown whether this relationship remains reliable under altered brain states associated to acetylcholine (ACh) levels, such as attention and arousal, and in pathological conditions like Alzheimer's disease. We therefore assessed the effects of varying ACh tone on whisker evoked-NVC responses in rat barrel cortex, measured by cerebral blood flow (CBF) and neurophysiological recordings (local field potentials, LFPs)...
January 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28069205/study-of-a-laboratory-scaled-new-method-for-the-accelerated-continuous-ageing-of-wine-spirits-by-applying-ultrasound-energy
#3
M J Delgado-González, M M Sánchez-Guillén, M V García-Moreno, M C Rodríguez-Dodero, C García-Barroso, D A Guillén-Sánchez
During the ageing of brandies, many physicochemical processes take place involving the distilled spirit and the wood of the casks. Because of these reactions, the polyphenolic content of brandies and their content of organic acids increase with the ageing. These reactions are slow, and the ageing of high-quality brandies takes several years. In this paper, the development of a system that uses the circulation of the wine distillate through encapsulated American oak chips and the application of ultrasound energy with the aim of producing aged wine spirits has been carried out, and the influences of the operation variables over the characteristics of the produced drink have been measured...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28057794/purinergic-signaling-in-the-cardiovascular-system
#4
REVIEW
Geoffrey Burnstock
There is nervous control of the heart by ATP as a cotransmitter in sympathetic, parasympathetic, and sensory-motor nerves, as well as in intracardiac neurons. Centers in the brain control heart activities and vagal cardiovascular reflexes involve purines. Adenine nucleotides and nucleosides act on purinoceptors on cardiomyocytes, AV and SA nodes, cardiac fibroblasts, and coronary blood vessels. Vascular tone is controlled by a dual mechanism. ATP, released from perivascular sympathetic nerves, causes vasoconstriction largely via P2X1 receptors...
January 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/28054311/attention-flexibly-trades-off-across-points-in-time
#5
Rachel N Denison, David J Heeger, Marisa Carrasco
Sensory signals continuously enter the brain, raising the question of how perceptual systems handle this constant flow of input. Attention to an anticipated point in time can prioritize visual information at that time. However, how we voluntarily attend across time when there are successive task-relevant stimuli has been barely investigated. We developed a novel experimental protocol that allowed us to assess, for the first time, both the benefits and costs of voluntary temporal attention when perceiving a short sequence of two or three visual targets with predictable timing...
January 4, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28054034/sensory-evaluation-of-gluten-free-quinoa-whole-grain-snacks
#6
Talwinder S Kahlon, Roberto J Avena-Bustillos, Mei-Chen M Chiu
Sensory evaluation of quinoa gluten-free whole grain low fat and salt snacks was conducted. The snacks were Quinoa, Quinoa-Cayenne Pepper, Quinoa-Ginger and Quinoa-Turmeric. Cayenne pepper, ginger and turmeric are common spices that contain health promoting nutrients. Cayenne pepper has been associated with enhancing heat production. Ginger has been reported to improve blood flow and prevent joint pains. Turmeric has been observed to have wound healing potential. All the snacks contained 6% corn oil and 2% salt...
December 2016: Heliyon
https://www.readbyqxmd.com/read/28053574/evaluation-of-different-commercial-feeds-on-grow-out-silver-black-porgy-sparidentex-hasta-valenciennes-for-optimum-growth-performance-fillet-quality-and-cost-of-production
#7
M A Hossain, K M Al-Abdul-Elah, S El-Dakour
The objective of the study was to find a cost-effective feed from three commercial feeds, namely, Arasco (Saudi Arabia), Skretting (Turkey), and Biomar (Greece) for commercially producing silver black porgy (sobaity bream), Sparidentex hasta in Kuwait. For confidentiality, these feeds were randomly given code names, diets 1, 2, and 3, which were known only to the investigating staffs. The trash fish (diet 4) was used as the control. The experiment was conducted for 28 wk with grow-out sobaity bream (210.0 ± 0...
January 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28043447/immediate-spinal-cord-collateral-blood-flow-during-thoracic-aortic-procedures-the-role-of-epidural-arcades
#8
Fabian A Kari, Karin Wittmann, Babak Saravi, Luisa Puttfarcken, Sonja Krause, Katharina Förster, Sven Maier, Ulrich Göbel, Friedhelm Beyersdorf
The objective of this study was to investigate the functional differences between paraspinal and intraspinal compartments of the spinal collateral network and the importance of circular epidural arcades in thoracic aortic surgery. N = 33 pigs (mean body weight: 34 ± 3kg) were included. A single-inlet-model of spinal collateral flow was created: paraspinal inflow into the collateral network was isolated by cephalad and caudal interruption of inflow into epidural arcades using laminectomies. Animals were assigned to treatment groups (Treatment "open" [patent epidural arcades, n = 10] and Treatment "closed" [closed epidural arcades, n = 10]) and Sham groups (Sham "open" n = 8 and Sham "closed" n = 5)...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28034986/influence-of-sexual-hormones-on-neural-orofacial-perception
#9
Bruna Alves, Flavia Ibuki, Alyne Simões Gonçalves, Manoel Jacobsen Teixeira, Silvia Regina Dowgan Tesseroli De Siqueira
OBJECTIVE  : To investigate the trigeminal somatosensory (thermal, pain, tactile, vibratory, and electric), gustative (salty, bitter, sweet, sour), and olfactory thresholds in healthy women during the menstrual cycle and investigate any association with estradiol and progesterone levels in saliva. METHODS : We examined/tested 39 women between age 19 and 47 years and with regular menstrual cycles and no comorbidities. All women were informed about the purposes of the study, and only those who signed the informed consent were included...
December 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28029723/sensory-trait-variation-contributes-to-biased-dispersal-of-threespine-stickleback-in-flowing-water
#10
Yuexin Jiang, Catherine L Peichel, Fei Ling, Daniel I Bolnick
Gene flow is widely thought to homogenize spatially separate populations, eroding effects of divergent selection. The resulting theory of 'migration-selection balance' is predicated on a common assumption that all genotypes are equally prone to dispersal. If instead certain genotypes are disproportionately likely to disperse, then migration can actually promote population divergence. For example, previous work has shown that threespine stickleback (Gasterosteus aculeatus) differ in their propensity to move up- or down-stream ('rheotactic response'), which may facilitate genetic divergence between adjoining lake and stream populations of stickleback...
December 28, 2016: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28025007/brain-rhythms-of-pain
#11
REVIEW
Markus Ploner, Christian Sorg, Joachim Gross
Pain is an integrative phenomenon that results from dynamic interactions between sensory and contextual (i.e., cognitive, emotional, and motivational) processes. In the brain the experience of pain is associated with neuronal oscillations and synchrony at different frequencies. However, an overarching framework for the significance of oscillations for pain remains lacking. Recent concepts relate oscillations at different frequencies to the routing of information flow in the brain and the signaling of predictions and prediction errors...
December 23, 2016: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/28018000/development-of-protein-fortified-mango-based-ready-to-serve-beverage
#12
Deep N Yadav, R K Vishwakarma, Sanket Borad, Sangita Bansal, Arvind K Jaiswal, Monika Sharma
Fruit drinks contain negligible amount of protein as nutritional component. Fortification of fruit drinks with protein is a challenge due to protein stability in acidic and ionic environment. Mango ready-to-serve (RTS) beverage was fortified with modified whey protein and its rheological properties were studied. Whey protein was hydrolysed with papain to improve its stability in acidic medium. The water holding capacity of whey protein increased about two times after hydrolysis. Hydrolysed and native whey protein was used at 2, 3 and 4% levels for fortification of mango based RTS beverage...
October 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28011952/role-of-sensory-afferent-nerves-lipid-peroxidation-and-antioxidative-enzymes-in-the-carbon-monoxide-induced-gastroprotection-against-stress-ulcerogenesis
#13
S Kwiecien, K Magierowska, M Magierowski, M Surmiak, M Hubalewska-Mazgaj, R Pajdo, Z Sliwowski, A Chmura, D Wojcik, T Brzozowski
Carbon monoxide (CO) is a physiological gaseous mediator recently implicated in the mechanism of gastric mucosal defense due to its vasodilatory and antioxidative properties. Small quantities of endogenous CO are produced during heme degradation by heme oxygenase (HO-1), however, the involvement of the capsaicin-sensitive afferent neurons releasing calcitonin gene related peptide (CGRP) and anti-oxidative factors and mechanisms in the CO-induced gastroprotection against stress ulcerogenesis has been little studied...
October 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28011263/prenatal-alcohol-exposure-potentiates-chronic-neuropathic-pain-spinal-glial-and-immune-cell-activation-and-alters-sciatic-nerve-and-drg-cytokine-levels
#14
Shahani Noor, Joshua J Sanchez, Arden G Vanderwall, Melody S Sun, Jessie R Maxwell, Suzy Davies, Lauren L Jantzie, Timothy R Petersen, Daniel D Savage, Erin D Milligan
A growing body of evidence indicates that prenatal alcohol exposure (PAE) may predispose individuals to secondary medical disabilities later in life. Animal models of PAE reveal neuroimmune sequelae such as elevated brain astrocyte and microglial activation with corresponding region-specific changes in immune signaling molecules such as cytokines and chemokines. The aim of this study was to evaluate the effects of moderate PAE on the development and maintenance of allodynia induced by chronic constriction injury (CCI) of the sciatic nerve in adult male rat offspring...
December 20, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28003918/superior-mesenteric-artery-syndrome-with-abdominal-compartment-syndrome
#15
Kevin Reece, Rachel Day, Janna Welch
Superior Mesenteric Artery (SMA) syndrome is a condition in which the duodenum becomes compressed between the SMA and the aorta, resulting in bowel obstruction which subsequently compresses surrounding structures. Pressure on the inferior vena cava (IVC) and aorta decreases cardiac output which compromises distal blood flow, resulting in abdominal compartment syndrome with ischemia and renal failure. A 15-year-old male with SMA syndrome presented with 12 hours of pain, a distended, rigid abdomen, mottled skin below the waist, and decreased motor and sensory function in the lower extremities...
2016: Case Reports in Emergency Medicine
https://www.readbyqxmd.com/read/27998779/systemic-blood-pressure-alters-cortical-blood-flow-and-neurovascular-coupling-during-nociceptive-processing-in-the-primary-somatosensory-cortex-of-the-rat
#16
Sae Uchida, Suzie Bois, Jean-Paul Guillemot, Hugues Leblond, Mathieu Piché
Inference on nociceptive and pain-related processes from functional magnetic resonance imaging is made with the assumption that the coupling of neuronal activity and cerebral hemodynamic changes is stable. However, since nociceptive stimulation is associated with increases in systemic arterial pressure, it is essential to determine whether this coupling remains the same during different levels of nociception and pain. The main objective of the present study was to compare the amplitude of local field potentials (LFP) and cerebral blood flow (CBF) changes in the primary somatosensory cortex during nociceptive electrical stimulation of the contralateral or ipsilateral forepaw in isoflurane-anesthetized rats, while manipulating mean arterial pressure (MAP)...
December 18, 2016: Neuroscience
https://www.readbyqxmd.com/read/27987767/sustained-drug-release-and-electrochemical-performance-of-ethyl-cellulose-magnesium-hydrogen-phosphate-composite
#17
Faruq Mohammad, Tanvir Arfin, Hamad A Al-Lohedan
In this, a sol-gel method was applied to prepare ethyl cellulose-magnesium hydrogen phosphate (EC-MgHPO4) composite that can have potential applications in the sensory, pharmaceutical, and biomedical sectors. The formed composite was thoroughly characterized by making use of the instrumental analysis such as UV-Vis, FT-IR, HRTEM, EDAX, SEM and XRD. For the composite, the other parameters determined includes the water uptake, porosity, thickness, bulk and tapped densities, angle of repose, Carr's index and Hausner ratio...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27981714/divergence-in-brain-composition-during-the-early-stages-of-ecological-specialisation-in-heliconius-butterflies
#18
Stephen H Montgomery, Richard M Merrill
During speciation across ecological gradients diverging populations are exposed to contrasting sensory and spatial information that present new behavioural and perceptive challenges. These challenges may be met by heritable or environmentally-induced changes in brain function which mediate behaviour. However, few studies have investigated patterns of neural divergence at the early stages of speciation, inhibiting our understanding of the relative importance of these processes. Here, we provide a novel case study...
December 16, 2016: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/27978501/balancing-sensory-inputs-sensory-reweighting-of-ankle-proprioception-and-vision-during-a-bipedal-posture-task
#19
Rakshatha Kabbaligere, Beom-Chan Lee, Charles S Layne
During multisensory integration, it has been proposed that the central nervous system (CNS) assigns a weight to each sensory input through a process called sensory reweighting. The outcome of this integration process is a single percept that is used to control posture. The main objective of this study was to determine the interaction between ankle proprioception and vision during sensory integration when the two inputs provide conflicting sensory information pertaining to direction of body sway. Sensory conflict was created by using bilateral Achilles tendon vibration and contracting visual flow and produced body sway in opposing directions when applied independently...
December 7, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27936122/association-of-odor-thresholds-and-responses-in-cerebral-blood-flow-of-the-prefrontal-area-during-olfactory-stimulation-in-patients-with-multiple-chemical-sensitivity
#20
Kenichi Azuma, Iwao Uchiyama, Mari Tanigawa, Ikuko Bamba, Michiyo Azuma, Hirohisa Takano, Toshikazu Yoshikawa, Kou Sakabe
Multiple chemical sensitivity (MCS) is a disorder characterized by nonspecific and recurrent symptoms from various organ systems associated with exposure to low levels of chemicals. Patients with MCS process odors differently than controls do. Previously, we suggested that this odor processing was associated with increased regional cerebral blood flow (rCBF) in the prefrontal area during olfactory stimulation using near-infrared spectroscopic (NIRS) imaging. The aim of this study was to investigate the association of odor thresholds and changes in rCBF during olfactory stimulation at odor threshold levels in patients with MCS...
2016: PloS One
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