Browsing ODA Open Digital Archive by Author "Johansen, Espen Borgå"
Now showing items 1-10 of 10
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Behavioral changes following PCB 153 exposure in the Spontaneously Hypertensive rat - an animal model of Attention-Deficit/Hyperactivity disorder
Johansen, Espen Borgå; Fonnum, Frode; Lausund, Per; Walaas, S. Ivar; Bærland, Nora Elise; Wøien, Grete; Sagvolden, Terje (Behavioral and Brain Functions;10(1), Journal article; Peer reviewed, 2014-01-09)Background Attention-Deficit/Hyperactivity Disorder (ADHD) is a behavioral disorder affecting 3-5% of children. Although ADHD is highly heritable, environmental factors like exposure during early development to various ... -
Female rats release a trapped cagemate following shaping of the door opening response: Opening latency when the restrainer was baited with food, was empty, or contained a cagemate
Andersen, Danielle; Johansen, Espen Borgå (PLoS ONE;14 (10): e0223039, Journal article; Peer reviewed, 2019-09-13)Research on pro-social rat behaviour is growing within the fields of comparative psychology and social neuroscience. However, much work remains on mapping important variables influencing this behaviour, and there is even ... -
Fight-flight-freeze, prestasjon i truende situasjoner: En teoretisk artikkel og en empirisk studie
Walberg-Steinsli, Eirik (MALKS;2020, Master thesis, 2020)Stress er en del av hverdagen for oss mennesker, og stress-respons systemet som alarmreaksjon er selektert gjennom evolusjon. «Fight-flight-freeze»-responsen er et uttrykk for dette alarmsystemet og beskriver en rekke ... -
Investigating social behaviour in animals: The curious case of the prosocial and empathic rat
Blystad, Magnus H. (OsloMet Avhandling 2021;Nr 13, Doctoral thesis; Peer reviewed, 2021)Animal models of behaviour have been used since ancient Greece, both to study anatomy and behaviour. Social behaviour has also been modelled in non-human animals, and these models are especially important for the field of ... -
Marine omega-3 polyunsaturated fatty acids induce sex-specific changes in reinforcer-controlled behaviour and neurotransmitter metabolism in a spontaneously hypertensive rat model of ADHD
Dervola, Kine S; Roberg, Bjørg Å; Wøien, Grete; Bogen, Inger Lise; Sandvik, Torbjørn H; Sagvolden, Terje; Drevon, Christian A; Johansen, Espen Borgå; Walaas, Sven Ivar (Behavioral and Brain Functions;8(56), Academic article, 2012)Previous reports suggest that omega-3 (n-3) polyunsaturated fatty acids (PUFA) supplements may reduce ADHD-like behaviour. Our aim was to investigate potential effects of n-3 PUFA supplementation in an animal model of ... -
Patterns of motor activity in spontaneously hypertensive rats compared to Wistar Kyoto rats
Fasmer, Ole Bernt; Johansen, Espen Borgå (Peer reviewed; Journal article; Journal article, 2016-12-01)Background: Increased motor activity is a defining characteristic of patients with ADHD, and spontaneously hyper - tensive rats have been suggested to be an animal model of this disorder. In the present study, we ... -
Postnatal exposure to PCB 153 and PCB 180, but not to PCB 52, produces changes in measures of attention, activity level and impulsivity in outbred male Wistar Kyoto rats
Johansen, Espen Borgå; Knoff, Monica; Fonnum, Frode; Lausund, Per; Walaas, S. Ivar; Wøien, Grete; Sagvolden, Terje (Journal article; Peer reviewed; Journal article, 2011)Background: Polychlorinated biphenyls (PCBs) are a class of organic compounds that bioaccumulate due to their chemical stability and lipophilic properties. Humans are prenatally exposed via trans-placental transfer, ... -
Previous experience with delays affects delay discounting in animal model of ADHD
Sjøberg, Espen A.; Ottåsen, Hans Martin; Wilner, Raquel Gloria; Johansen, Espen Borgå (Peer reviewed; Journal article, 2023)Background ADHD is a disorder where a common symptom is impulsive behaviour, a broad term associated with making sub-optimal choices. One frequently used method to investigate impulsive behaviour is delay discounting, which ... -
Rat Models of ADHD
Sagvolden, Terje; Johansen, Espen Borgå (Current Topics in Behavioral Neurosciences;9, Chapter; Peer reviewed, 2011-04-13) -
The spontaneously hypertensive rat (SHR) as an animal model of attention-deficit/hyperactivity disorder; stimulus control, sensory reinforcement and discrimination. Artikkel 1
Skillebekk, Martin (MALKS;2014, Master thesis, 2014)Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder found all over the world with a prevalence of around 5% in children and 2.5% in adults. An estimated heritability of 76% has been suggested, ...