New data on the brain and cognitive abilities of birds

Zorina, Z. A.; Obozova, T. A.

doi:10.1134/s1062359012070126

Cited by 14 publications

(13 citation statements)

References 52 publications

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“…Dental extractions and surgical procedures in patients with all severities of bleeding disorder were considered to carry high risk of bleeding. The evidence base in this group is well established, with both cohort and randomized controlled trials showing the need for extended haemostatic treatment to prevent bleeding complications, and the efficacy of dual antifibrinolytic therapy in decreasing the duration of the replacement therapy . Patients with severe bleeding disorders were given treatment to raise their factor levels to at least 50% for dental extraction while there is some suggestion in the literature that lower levels of 30% could be equally effective .…”

Section: Discussionmentioning

confidence: 99%

Risk‐based management of dental procedures in patients with inherited bleeding disorders: Development of a Dental Bleeding Risk Assessment and Treatment Tool (DeBRATT)

et al. 2017

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Section: Discussionmentioning

confidence: 99%

Risk‐based management of dental procedures in patients with inherited bleeding disorders: Development of a Dental Bleeding Risk Assessment and Treatment Tool (DeBRATT)

et al. 2017

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“…An Apgar score of 7 – 10 is regarded as normal. A persistent Apgar score of 0 – 3 correlates with increased perinatal mortality 10 , 11 . However, its predictive value as regards impaired cognitive function is controversial 12 .…”

Section: Introductionmentioning

confidence: 99%

Foetal Morbidity Depending on the Day and Time of Delivery

Wiebking

Kundu

et al. 2018

Geburtshilfe Frauenheilkd

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Introduction It is known that perinatal mortality is increased with births at night and at the weekend. The aim of the study was to investigate whether there is also an association between the time of delivery (weekday, night, weekend) and perinatal morbidity. Material and Methods All births at Hannover Medical College between 2000 and 2014 were included in a retrospective data analysis. Multiple births, primary sections, severe foetal malformations and intrauterine deaths were not included. A 5-minute Apgar score ≤ 5 and cord arterial pH < 7.10 were defined as perinatal morbidity. Besides the time of delivery, different variables that are regarded as risk factors for increased perinatal morbidity were studied. Univariate logistical regression analysis was performed, followed by multivariate analysis. Results 18 394 deliveries were included in the study. Pathological prepartum Doppler, medical induction of labour and delivery at night and/or at the weekend significantly increased the probability of an Apgar score ≤ 5 after 5 minutes. The probability that a child will have cord arterial pH < 7.1 post partum is significantly increased with a BMI > 25 before pregnancy, primiparity, medical induction of labour, peripartum administration of oxytocic agents, when the delivery took place at night and weekend combined, but also when the delivery took place at night or at the weekend/on a public holiday. Multivariate regression analysis showed that a time of delivery at night and/or at the weekend or on a public holiday is not a prognostic factor for a 5-minute Apgar score ≤ 5 (p = 0.2377) but is a prognostic factor for cord arterial pH < 7.1 (p = 0.0252). Conclusion The time of delivery at night or at the weekend/on a public holiday increases the risk for cord arterial pH < 7.1 by ~ 30% compared with delivery on a weekday. However, the time of delivery at night or at the weekend/on a public holiday does not increase the risk for the baby of having a 5-minute Apgar score ≤ 5.

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“…This relates to the cur rent issues of comparative psychology, physiology, and zoology, as the micro and macrostructures of the bird brain differ considerably from those of mammals (absence of the neocortex and prevalence of the cytoarchitectonics of the nuclear type) and, until recently, were regarded as more primitive (Zorina and Obozova, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Their brain is character ized by different types of structural and functional organization, ranging from the most ancient and archaic (Columbiformes and Galliformes) to the most progressively developed ones in phylogenetically young species (corvids, parrots, and owls). Despite the existence of a number of works on brain morphology in different species, at present, Portmann's index for the hemispheres is the only universal and objective indicator of the level of brain development in birds (Portmann, 1947;Zorina and Obozova, 2011). Port mann's index is the ratio of the weight of the cerebral hemispheres to the weight of the brain stem of a bird from the order Galliformes, which has the same body weight as the studied bird.…”

Section: Introductionmentioning

confidence: 99%

A comparative assessment of birds’ ability to solve string-pulling tasks

Obozova

Bagotskaya

et al. 2014

Biol Bull Russ Acad Sci

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A set of string pulling tasks was used to compare the cognitive abilities of birds with different levels of brain complexity, which was judged using Portmann's index for the hemispheres. Varying the number and relative position of strings and bait, we investigated whether birds of different species (hooded crows (Corvus cornix), red crossbills (Loxia curvirostra), Eurasian blue tits (Parus caeruleus), and great gray owls (Strix neb ulosa)) are capable of comprehending the logical structure of such tasks based on cause-effect relationships. Among the observed representatives of Passeriformes, only hooded crows, which possess the most complex and highly differentiated brain, were shown to be able to solve correctly the most difficult versions of the string pulling tasks and, therefore, to understand their logical structure. Small passerine birds and owls, which are characterized by a similarly high value of Portmann's index, proved to be incapable of compre hending the cause-effect relationship between the components of the tasks.

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New data on the brain and cognitive abilities of birds

Cited by 14 publications

References 52 publications

Risk‐based management of dental procedures in patients with inherited bleeding disorders: Development of a Dental Bleeding Risk Assessment and Treatment Tool (DeBRATT)

Risk‐based management of dental procedures in patients with inherited bleeding disorders: Development of a Dental Bleeding Risk Assessment and Treatment Tool (DeBRATT)

Foetal Morbidity Depending on the Day and Time of Delivery

A comparative assessment of birds’ ability to solve string-pulling tasks

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