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Peter Dayan

Ashley Blanchard, Keven I Cabrera, Nathan Kuppermann, Peter S Dayan
OBJECTIVES: We aimed to determine the prevalence of and adverse outcomes caused by pneumocephali in children with minor blunt head trauma who had no other intracranial injuries (ie, isolated pneumocephali). METHODS: We conducted a secondary analysis of a public use dataset from a multicenter prospective study of pediatric minor head trauma. We included children younger than 18 years with Glasgow Coma Scale (GCS) scores of 14 or 15 and non-trivial mechanisms of injury who had cranial computed tomographies obtained...
October 6, 2016: Pediatric Emergency Care
Lauren Stephanie Chernick, Rebecca Schnall, Melissa S Stockwell, Paula M Castaño, Tracy Higgins, Carolyn Westhoff, John Santelli, Peter S Dayan
BACKGROUND: Over 15 million adolescents use the emergency department (ED) each year in the United States. Adolescent females who use the ED for medical care have been found to be at high risk for unintended pregnancy. Given that adolescents represent the largest users of text messaging and are receptive to receiving text messages related to their sexual health, the ED visit represents an opportunity for intervention. OBJECTIVE: The aim of this qualitative study was to explore interest in and preferences for the content, frequency, and timing of an ED-based text message intervention to prevent pregnancy for adolescent females...
2016: Journal of Medical Internet Research
Tim I M Korevaar, Peter N Taylor, Colin M Dayan, Robin P Peeters
No abstract text is available yet for this article.
October 2016: Obstetrics and Gynecology
Paul Faulkner, Federico Mancinelli, Patricia L Lockwood, Mar Matarin, Raymond J Dolan, Nick W Wood, Peter Dayan, Jonathan P Roiser
BACKGROUND: The effects of acute tryptophan depletion on human decision-making suggest that serotonin modulates the processing of rewards and punishments. However, few studies have assessed which of the many types of serotonin receptors are responsible. METHODS: Using a within-subject, double-blind, sham-controlled design in 26 subjects, we examined whether individual differences in serotonin system gene transcription, measured in peripheral blood, predicted the effect of acute tryptophan depletion on decision-making...
October 3, 2016: International Journal of Neuropsychopharmacology
Ben Seymour, Michael Barbe, Peter Dayan, Tamara Shiner, Ray Dolan, Gereon R Fink
Deep brain stimulation (DBS) of the subthalamic nucleus in Parkinson's disease is known to cause a subtle but important adverse impact on behaviour, with impulsivity its most widely reported manifestation. However, precisely which computational components of the decision process are modulated is not fully understood. Here we probe a number of distinct subprocesses, including temporal discount, outcome utility, instrumental learning rate, instrumental outcome sensitivity, reward-loss trade-offs, and perseveration...
2016: Scientific Reports
Chengjun Li, Masato Hatta, David F Burke, Jihui Ping, Ying Zhang, Makoto Ozawa, Andrew S Taft, Subash C Das, Anthony P Hanson, Jiasheng Song, Masaki Imai, Peter R Wilker, Tokiko Watanabe, Shinji Watanabe, Mutsumi Ito, Kiyoko Iwatsuki-Horimoto, Colin A Russell, Sarah L James, Eugene Skepner, Eileen A Maher, Gabriele Neumann, Alexander I Klimov, Anne Kelso, John McCauley, Dayan Wang, Yuelong Shu, Takato Odagiri, Masato Tashiro, Xiyan Xu, David E Wentworth, Jacqueline M Katz, Nancy J Cox, Derek J Smith, Yoshihiro Kawaoka
Influenza viruses mutate frequently, necessitating constant updates of vaccine viruses. To establish experimental approaches that may complement the current vaccine strain selection process, we selected antigenic variants from human H1N1 and H3N2 influenza virus libraries possessing random mutations in the globular head of the haemagglutinin protein (which includes the antigenic sites) by incubating them with human and/or ferret convalescent sera to human H1N1 and H3N2 viruses. We also selected antigenic escape variants from human viruses treated with convalescent sera and from mice that had been previously immunized against human influenza viruses...
2016: Nature Microbiology
Prashant Mahajan, Nathan Kuppermann, Asuncion Mejias, Nicolas Suarez, Damien Chaussabel, T Charles Casper, Bennett Smith, Elizabeth R Alpern, Jennifer Anders, Shireen M Atabaki, Jonathan E Bennett, Stephen Blumberg, Bema Bonsu, Dominic Borgialli, Anne Brayer, Lorin Browne, Daniel M Cohen, Ellen F Crain, Andrea T Cruz, Peter S Dayan, Rajender Gattu, Richard Greenberg, John D Hoyle, David M Jaffe, Deborah A Levine, Kathleen Lillis, James G Linakis, Jared Muenzer, Lise E Nigrovic, Elizabeth C Powell, Alexander J Rogers, Genie Roosevelt, Richard M Ruddy, Mary Saunders, Michael G Tunik, Leah Tzimenatos, Melissa Vitale, J Michael Dean, Octavio Ramilo
IMPORTANCE: Young febrile infants are at substantial risk of serious bacterial infections; however, the current culture-based diagnosis has limitations. Analysis of host expression patterns ("RNA biosignatures") in response to infections may provide an alternative diagnostic approach. OBJECTIVE: To assess whether RNA biosignatures can distinguish febrile infants aged 60 days or younger with and without serious bacterial infections. DESIGN, SETTING, AND PARTICIPANTS: Prospective observational study involving a convenience sample of febrile infants 60 days or younger evaluated for fever (temperature >38° C) in 22 emergency departments from December 2008 to December 2010 who underwent laboratory evaluations including blood cultures...
August 23, 2016: JAMA: the Journal of the American Medical Association
Michael G Tunik, Elizabeth C Powell, Prashant Mahajan, Jeff E Schunk, Elizabeth Jacobs, Michelle Miskin, Sally Jo Zuspan, Sandra Wootton-Gorges, Shireen M Atabaki, John D Hoyle, James F Holmes, Peter S Dayan, Nathan Kuppermann
STUDY OBJECTIVE: We describe presentations and outcomes of children with basilar skull fractures in the emergency department (ED) after blunt head trauma. METHODS: This was a secondary analysis of an observational cohort of children with blunt head trauma. Basilar skull fracture was defined as physical examination signs of basilar skull fracture without basilar skull fracture on computed tomography (CT), or basilar skull fracture on CT regardless of physical examination signs of basilar skull fracture...
October 2016: Annals of Emergency Medicine
Haidong Wang, Tim M Wolock, Austin Carter, Grant Nguyen, Hmwe Hmwe Kyu, Emmanuela Gakidou, Simon I Hay, Edward J Mills, Adam Trickey, William Msemburi, Matthew M Coates, Meghan D Mooney, Maya S Fraser, Amber Sligar, Joshua Salomon, Heidi J Larson, Joseph Friedman, Amanuel Alemu Abajobir, Kalkidan Hassen Abate, Kaja M Abbas, Mohamed Magdy Abd El Razek, Foad Abd-Allah, Abdishakur M Abdulle, Semaw Ferede Abera, Ibrahim Abubakar, Laith J Abu-Raddad, Niveen M E Abu-Rmeileh, Gebre Yitayih Abyu, Akindele Olupelumi Adebiyi, Isaac Akinkunmi Adedeji, Ademola Lukman Adelekan, Koranteng Adofo, Arsène Kouablan Adou, Oluremi N Ajala, Tomi F Akinyemiju, Nadia Akseer, Faris Hasan Al Lami, Ziyad Al-Aly, Khurshid Alam, Noore K M Alam, Deena Alasfoor, Saleh Fahed S Aldhahri, Robert William Aldridge, Miguel Angel Alegretti, Alicia V Aleman, Zewdie Aderaw Alemu, Rafael Alfonso-Cristancho, Raghib Ali, Ala'a Alkerwi, François Alla, Rajaa Mohammad, Salem Al-Raddadi, Ubai Alsharif, Elena Alvarez, Nelson Alvis-Guzman, Azmeraw T Amare, Alemayehu Amberbir, Adeladza Kofi Amegah, Walid Ammar, Stephen Marc Amrock, Carl Abelardo T Antonio, Palwasha Anwari, Johan Ärnlöv, Al Artaman, Hamid Asayesh, Rana Jawad Asghar, Reza Assadi, Suleman Atique, Lydia S Atkins, Euripide Frinel G Arthur Avokpaho, Ashish Awasthi, Beatriz Paulina Ayala Quintanilla, Umar Bacha, Alaa Badawi, Aleksandra Barac, Till Bärnighausen, Arindam Basu, Tigist Assefa Bayou, Yibeltal Tebekaw Bayou, Shahrzad Bazargan-Hejazi, Justin Beardsley, Neeraj Bedi, Derrick A Bennett, Isabela M Bensenor, Balem Demtsu Betsu, Addisu Shunu Beyene, Eesh Bhatia, Zulfiqar A Bhutta, Sibhatu Biadgilign, Boris Bikbov, Sait Mentes Birlik, Donal Bisanzio, Michael Brainin, Alexandra Brazinova, Nicholas J K Breitborde, Alexandria Brown, Michael Burch, Zahid A Butt, Julio Cesar Campuzano, Rosario Cárdenas, Juan Jesus Carrero, Carlos A Castañeda-Orjuela, Jacqueline Castillo Rivas, Ferrán Catalá-López, Hsing-Yi Chang, Jung-Chen Chang, Laxmikant Chavan, Wanqing Chen, Peggy Pei-Chia Chiang, Mirriam Chibalabala, Vesper Hichilombwe Chisumpa, Jee-Young Jasmine Choi, Devasahayam Jesudas Christopher, Liliana G Ciobanu, Cyrus Cooper, Tukur Dahiru, Solomon Abreha Damtew, Lalit Dandona, Rakhi Dandona, José das Neves, Pieter de Jager, Diego De Leo, Louisa Degenhardt, Robert P Dellavalle, Kebede Deribe, Amare Deribew, Don C Des Jarlais, Samath D Dharmaratne, Eric L Ding, Pratik Pinal Doshi, Tim R Driscoll, Manisha Dubey, Yousef Mohamed Elshrek, Iqbal Elyazar, Aman Yesuf Endries, Sergey Petrovich Ermakov, Babak Eshrati, Alireza Esteghamati, Imad D A Faghmous, Carla Sofia E Sa Farinha, Andre Faro, Maryam S Farvid, Farshad Farzadfar, Seyed-Mohammad Fereshtehnejad, Joao C Fernandes, Florian Fischer, Joseph Robert Ander Fitchett, Nataliya Foigt, Nancy Fullman, Thomas Fürst, Fortuné Gbètoho Gankpé, Teshome Gebre, Amanuel Tesfay Gebremedhin, Alemseged Aregay Gebru, Johanna M Geleijnse, Bradford D Gessner, Peter W Gething, Tsegaye Tewelde Ghiwot, Maurice Giroud, Melkamu Dedefo Gishu, Elizabeth Glaser, Shifalika Goenka, Amador Goodridge, Sameer Vali Gopalani, Atsushi Goto, Harish Chander Gugnani, Mark D C Guimaraes, Rahul Gupta, Rajeev Gupta, Vipin Gupta, Juanita Haagsma, Nima Hafezi-Nejad, Holly Hagan, Gessessew Bugssa Hailu, Randah Ribhi Hamadeh, Samer Hamidi, Mouhanad Hammami, Graeme J Hankey, Yuantao Hao, Hilda L Harb, Sivadasanpillai Harikrishnan, Josep Maria Haro, Kimani M Harun, Rasmus Havmoeller, Mohammad T Hedayati, Ileana Beatriz Heredia-Pi, Hans W Hoek, Masako Horino, Nobuyuki Horita, H Dean Hosgood, Damian G Hoy, Mohamed Hsairi, Guoqing Hu, Hsiang Huang, John J Huang, Kim Moesgaard Iburg, Bulat T Idrisov, Kaire Innos, Veena J Iyer, Kathryn H Jacobsen, Nader Jahanmehr, Mihajlo B Jakovljevic, Mehdi Javanbakht, Achala Upendra Jayatilleke, Panniyammakal Jeemon, Vivekanand Jha, Guohong Jiang, Ying Jiang, Tariku Jibat, Jost B Jonas, Zubair Kabir, Ritul Kamal, Haidong Kan, André Karch, Corine Kakizi Karema, Dimitris Karletsos, Amir Kasaeian, Anil Kaul, Norito Kawakami, Jeanne Françoise Kayibanda, Peter Njenga Keiyoro, Andrew Haddon Kemp, Andre Pascal Kengne, Chandrasekharan Nair Kesavachandran, Yousef Saleh Khader, Ibrahim Khalil, Abdur Rahman Khan, Ejaz Ahmad Khan, Young-Ho Khang, Jagdish Khubchandani, Yun Jin Kim, Yohannes Kinfu, Miia Kivipelto, Yoshihiro Kokubo, Soewarta Kosen, Parvaiz A Koul, Ai Koyanagi, Barthelemy Kuate Defo, Burcu Kucuk Bicer, Veena S Kulkarni, G Anil Kumar, Dharmesh Kumar Lal, Hilton Lam, Jennifer O Lam, Sinead M Langan, Van C Lansingh, Anders Larsson, James Leigh, Ricky Leung, Yongmei Li, Stephen S Lim, Steven E Lipshultz, Shiwei Liu, Belinda K Lloyd, Giancarlo Logroscino, Paulo A Lotufo, Raimundas Lunevicius, Hassan Magdy Abd El Razek, Mahdi Mahdavi, Marek Majdan, Azeem Majeed, Carla Makhlouf, Reza Malekzadeh, Chabila C Mapoma, Wagner Marcenes, Jose Martinez-Raga, Melvin Barrientos Marzan, Felix Masiye, Amanda J Mason-Jones, Bongani M Mayosi, Martin McKee, Peter A Meaney, Man Mohan Mehndiratta, Alemayehu B Mekonnen, Yohannes Adama Melaku, Peter Memiah, Ziad A Memish, Walter Mendoza, Atte Meretoja, Tuomo J Meretoja, Francis Apolinary Mhimbira, Ted R Miller, Joseph Mikesell, Mojde Mirarefin, Karzan Abdulmuhsin Mohammad, Shafiu Mohammed, Ali H Mokdad, Lorenzo Monasta, Maziar Moradi-Lakeh, Rintaro Mori, Ulrich O Mueller, Brighton Murimira, Gudlavalleti Venkata Satyanarayana Murthy, Aliya Naheed, Luigi Naldi, Vinay Nangia, Denis Nash, Haseeb Nawaz, Chakib Nejjari, Frida Namnyak Ngalesoni, Jean de Dieu Ngirabega, Quyen Le Nguyen, Muhammad Imran Nisar, Ole F Norheim, Rosana E Norman, Luke Nyakarahuka, Felix Akpojene Ogbo, In-Hwan Oh, Foluke Adetola Ojelabi, Bolajoko Olubukunola Olusanya, Jacob Olusegun Olusanya, John Nelson Opio, Eyal Oren, Erika Ota, Mahesh Anand Padukudru, Hye-Youn Park, Jae-Hyun Park, Snehal T Patil, Scott B Patten, Vinod K Paul, Katherine Pearson, Emmanuel Kwame Peprah, Claudia C Pereira, Norberto Perico, Konrad Pesudovs, Max Petzold, Michael Robert Phillips, Julian David Pillay, Dietrich Plass, Suzanne Polinder, Farshad Pourmalek, David M Prokop, Mostafa Qorbani, Anwar Rafay, Kazem Rahimi, Vafa Rahimi-Movaghar, Mahfuzar Rahman, Mohammad Hifz Ur Rahman, Sajjad Ur Rahman, Rajesh Kumar Rai, Sasa Rajsic, Usha Ram, Saleem M Rana, Paturi Vishnupriya Rao, Giuseppe Remuzzi, David Rojas-Rueda, Luca Ronfani, Gholamreza Roshandel, Ambuj Roy, George Mugambage Ruhago, Mohammad Yahya Saeedi, Rajesh Sagar, Muhammad Muhammad Saleh, Juan R Sanabria, Itamar S Santos, Rodrigo Sarmiento-Suarez, Benn Sartorius, Monika Sawhney, Aletta E Schutte, David C Schwebel, Soraya Seedat, Sadaf G Sepanlou, Edson E Servan-Mori, Masood Ali Shaikh, Rajesh Sharma, Jun She, Sara Sheikhbahaei, Jiabin Shen, Kenji Shibuya, Hwashin Hyun Shin, Inga Dora Sigfusdottir, Naris Silpakit, Diego Augusto Santos Silva, Dayane Gabriele Alves Silveira, Edgar P Simard, Shireen Sindi, Jasvinder A Singh, Om Prakash Singh, Prashant Kumar Singh, Vegard Skirbekk, Karen Sliwa, Samir Soneji, Reed J D Sorensen, Joan B Soriano, David O Soti, Chandrashekhar T Sreeramareddy, Vasiliki Stathopoulou, Nicholas Steel, Bruno F Sunguya, Soumya Swaminathan, Bryan L Sykes, Rafael Tabarés-Seisdedos, Roberto Tchio Talongwa, Mohammad Tavakkoli, Bineyam Taye, Bemnet Amare Tedla, Tesfaye Tekle, Girma Temam Shifa, Awoke Misganaw Temesgen, Abdullah Sulieman Terkawi, Fisaha Haile Tesfay, Gizachew Assefa Tessema, Kiran Thapa, Alan J Thomson, Andrew L Thorne-Lyman, Ruoyan Tobe-Gai, Roman Topor-Madry, Jeffrey Allen Towbin, Bach Xuan Tran, Zacharie Tsala Dimbuene, Nikolaos Tsilimparis, Abera Kenay Tura, Kingsley Nnanna Ukwaja, Chigozie Jesse Uneke, Olalekan A Uthman, N Venketasubramanian, Sergey K Vladimirov, Vasiliy Victorovich Vlassov, Stein Emil Vollset, Linhong Wang, Elisabete Weiderpass, Robert G Weintraub, Andrea Werdecker, Ronny Westerman, Tissa Wijeratne, James D Wilkinson, Charles Shey Wiysonge, Charles D A Wolfe, Sungho Won, John Q Wong, Gelin Xu, Ajit Kumar Yadav, Bereket Yakob, Ayalnesh Zemene Yalew, Yuichiro Yano, Mehdi Yaseri, Henock Gebremedhin Yebyo, Paul Yip, Naohiro Yonemoto, Seok-Jun Yoon, Mustafa Z Younis, Chuanhua Yu, Shicheng Yu, Zoubida Zaidi, Maysaa El Sayed Zaki, Hajo Zeeb, Hao Zhang, Yong Zhao, Sanjay Zodpey, Leo Zoeckler, Liesl Joanna Zuhlke, Alan D Lopez, Christopher J L Murray
BACKGROUND: Timely assessment of the burden of HIV/AIDS is essential for policy setting and programme evaluation. In this report from the Global Burden of Disease Study 2015 (GBD 2015), we provide national estimates of levels and trends of HIV/AIDS incidence, prevalence, coverage of antiretroviral therapy (ART), and mortality for 195 countries and territories from 1980 to 2015. METHODS: For countries without high-quality vital registration data, we estimated prevalence and incidence with data from antenatal care clinics and population-based seroprevalence surveys, and with assumptions by age and sex on initial CD4 distribution at infection, CD4 progression rates (probability of progression from higher to lower CD4 cell-count category), on and off antiretroviral therapy (ART) mortality, and mortality from all other causes...
August 2016: Lancet HIV
Michael Moutoussis, Raymond J Dolan, Peter Dayan
The weight with which a specific outcome feature contributes to preference quantifies a person's 'taste' for that feature. However, far from being fixed personality characteristics, tastes are plastic. They tend to align, for example, with those of others even if such conformity is not rewarded. We hypothesised that people can be uncertain about their tastes. Personal tastes are therefore uncertain beliefs. People can thus learn about them by considering evidence, such as the preferences of relevant others, and then performing Bayesian updating...
July 2016: PLoS Computational Biology
Eric Tham, Marguerite Swietlik, Sara Deakyne, Jeffrey M Hoffman, Robert W Grundmeier, Marilyn D Paterno, Beatriz H Rocha, Molly H Schaeffer, Deepika Pabbathi, Evaline Alessandrini, Dustin Ballard, Howard S Goldberg, Nathan Kuppermann, Peter S Dayan
INTRODUCTION: For children who present to emergency departments (EDs) due to blunt head trauma, ED clinicians must decide who requires computed tomography (CT) scanning to evaluate for traumatic brain injury (TBI). The Pediatric Emergency Care Applied Research Network (PECARN) derived and validated two age-based prediction rules to identify children at very low risk of clinically-important traumatic brain injuries (ciTBIs) who do not typically require CT scans. In this case report, we describe the strategy used to implement the PECARN TBI prediction rules via electronic health record (EHR) clinical decision support (CDS) as the intervention in a multicenter clinical trial...
2016: Applied Clinical Informatics
Daniel B Fenster, Peter S Dayan, John Babineau, Linda Aponte-Patel, Daniel S Tsze
OBJECTIVES: Abscess incision and drainage (I&D) are painful and distressing procedures in children. Intranasal (IN) fentanyl is an effective analgesic for reducing symptomatic pain associated with fractures and burns but has not been studied for reducing procedural pain during abscess I&D. Our objective was to compare the analgesic efficacy of IN fentanyl with intravenous (IV) morphine for abscess I&D in children. METHODS: We performed a randomized noninferiority trial in children aged 4 to 18 years undergoing abscess I&D in a pediatric emergency department...
July 12, 2016: Pediatric Emergency Care
Zeb Kurth-Nelson, Marcos Economides, Raymond J Dolan, Peter Dayan
Fast internally generated sequences of neural representations are suggested to support learning and online planning. However, these sequences have only been studied in the context of spatial tasks and never in humans. Here, we recorded magnetoencephalography (MEG) while human subjects performed a novel non-spatial reasoning task. The task required selecting paths through a set of six visual objects. We trained pattern classifiers on the MEG activity elicited by direct presentation of the visual objects alone and tested these classifiers on activity recorded during periods when no object was presented...
July 6, 2016: Neuron
Robb B Rutledge, Archy O de Berker, Svenja Espenhahn, Peter Dayan, Raymond J Dolan
Although social comparison is a known determinant of overall life satisfaction, it is not clear how it affects moment-to-moment variation in subjective emotional state. Using a novel social decision task combined with computational modelling, we show that a participant's subjective emotional state reflects not only the impact of rewards they themselves receive, but also the rewards received by a social partner. Unequal outcomes, whether advantageous or disadvantageous, reduce average momentary happiness. Furthermore, the relative impacts of advantageous and disadvantageous inequality on momentary happiness at the individual level predict a subject's generosity in a separate dictator game...
2016: Nature Communications
Robb B Rutledge, Peter Smittenaar, Peter Zeidman, Harriet R Brown, Rick A Adams, Ulman Lindenberger, Peter Dayan, Raymond J Dolan
The extent to which aging affects decision-making is controversial. Given the critical financial decisions that older adults face (e.g., managing retirement funds), changes in risk preferences are of particular importance [1]. Although some studies have found that older individuals are more risk averse than younger ones [2-4], there are also conflicting results, and a recent meta-analysis found no evidence for a consistent change in risk taking across the lifespan [5]. There has as yet been little examination of one potential substrate for age-related changes in decision-making, namely age-related decline in dopamine, a neuromodulator associated with risk-taking behavior...
June 20, 2016: Current Biology: CB
Daniel S Tsze, Gerrit Hirschfeld, Peter S Dayan, Blake Bulloch, Carl L von Baeyer
OBJECTIVES: The aims of this study were to define the Faces Pain Scale-Revised (FPS-R) and Color Analog Scale (CAS) scores associated with no pain, mild pain, moderate pain, and severe pain in children with acute pain, and to identify differences based on age, sex, and ethnicity. METHODS: We conducted a prospective observational study in 2 pediatric emergency departments of children aged 4 to 17 years with painful and nonpainful conditions. We assessed their pain intensity using the FPS-R, CAS, and qualitative measures...
May 25, 2016: Pediatric Emergency Care
Kevin Lloyd, Peter Dayan
We enjoy a sophisticated understanding of how animals learn to predict appetitive outcomes and direct their behaviour accordingly. This encompasses well-defined learning algorithms and details of how these might be implemented in the brain. Dopamine has played an important part in this unfolding story, appearing to embody a learning signal for predicting rewards and stamping in useful actions, while also being a modulator of behavioural vigour. By contrast, although choosing correct actions and executing them vigorously in the face of adversity is at least as important, our understanding of learning and behaviour in aversive settings is less well developed...
2016: Behavioral and Brain Functions: BBF
Dominic A Borgialli, Prashant Mahajan, John D Hoyle, Elizabeth C Powell, Frances M Nadel, Michael G Tunik, Adele Foerster, Lydia Dong, Michelle Miskin, Peter S Dayan, James F Holmes, Nathan Kuppermann
OBJECTIVE: The objective was to compare the accuracy of the pediatric Glasgow Coma Scale (GCS) score in preverbal children to the standard GCS score in older children for identifying those with traumatic brain injuries (TBIs) after blunt head trauma. METHODS: This was a planned secondary analysis of a large prospective observational multicenter cohort study of children with blunt head trauma. Clinical data were recorded onto case report forms before computed tomography (CT) results or clinical outcomes were known...
August 2016: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
Tamar R Lubell, David Schnadower, Stephen B Freedman, Charles G Macias, Dewesh Agrawal, Nathan Kuppermann, Peter S Dayan
BACKGROUND: Few data exist on the presentations and clinical courses of infants with enterococcal urinary tract infections (UTI). The objective of this study was to compare the clinical presentation, sensitivity of urinalysis (UA) and Gram's stain, radiological abnormalities and adverse events of febrile infants with enterococcal UTIs to those with Gram-negative UTIs. METHODS: Retrospective study of febrile (≥38.0°C) infants 29-60 days of age with UTIs at 20 emergency departments...
September 2016: Pediatric Infectious Disease Journal
Francesco Rigoli, Benjamin Chew, Peter Dayan, Raymond J Dolan
The role of dopaminergic brain regions in avoidance behaviour is unclear. Active avoidance requires motivation, and the latter is linked to increased activity in dopaminergic regions. However, avoidance is also often tethered to the prospect of punishment, a state typically characterized by below baseline levels of dopaminergic function. Avoidance has been considered from the perspective of two-factor theories where the prospect of safety is considered to act as a surrogate for reward, leading to dopamine release and enhanced motivational drive...
July 15, 2016: NeuroImage
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