scholarly journals The Octopus: A Unique Animal for Studying the Brain

2021 ◽  
Vol 9 ◽  
Author(s):  
Tal Shomrat ◽  
Nir Nesher

What are the structures and functions of the brain that are important for complex learning, such as the ability to quickly figure out how to activate a new application in your smartphone? What are the brain mechanisms that allow memories, like the name of your first-grade teacher, to be stored and quickly recalled, even many years later? Which part of the brain generates the creativity and flexibility of thought necessary for learning a new smartphone interface, for example? These questions are some of the most studied in neuroscience, which is the science that studies the brain and nervous system. In this article, we will tell you how research on the octopus’s brain could help us find answers to these questions. By comparing the structure and function of the octopus brain to the brains of other animals, we might even obtain clues about the workings of the human brain.

Author(s):  
Steven E. Hyman ◽  
Doug McConnell

‘Mental illness: the collision of meaning with mechanism’ is based on the views of psychiatry that Steven Hyman articulated in his Loebel Lectures—mental illness results from the disordered functioning of the human brain and effective treatment repairs or mitigates those malfunctions. This view is not intended as reductionist as causes of mental illness and contributions to their repair may come from any source that affects the structure and function of the brain. These might include social interactions and other sources of lived experience, ideas (such as those learned in cognitive therapy), gene sequences and gene regulation, metabolic factors, drugs, electrodes, and so on. This, however, is not the whole story for psychiatry on Hyman’s view; interpersonal interactions between clinicians and patients, intuitively understood in such folk psychological terms as selfhood, intention, and agency are also critical for successful practice. As human beings who are suffering, patients seek to make sense of their lives and benefit from the empathy, respect, and a sense of being understood not only as the objects of a clinical encounter, but also as subjects. Hyman’s argument, however, is that the mechanisms by which human brains function and malfunction to produce the symptoms and impairments of mental illness are opaque to introspection and that the mechanistic understandings necessary for diagnosis and treatment are incommensurate with intuitive (folk psychological) human self-understanding. Thus, psychiatry does best when skillful clinicians switch between an objectifying medical and neurobiological stance and the interpersonal stance in which the clinician engages the patients as a subject. Attempts to integrate these incommensurate views of patients and their predicaments have historically produced incoherent explanations of psychopathology and have often led treatment astray. For example, privileging of folk psychological testimony, even when filtered through sophisticated theories has historically led psychiatry into intellectually blind and clinically ineffective cul-de-sacs such as psychoanalysis.


Mr . President and Gentlemen, My most pleasant duty to-day is to thank your Council for the honour that it has conferred upon me by inviting me to give the second lecture in memory of the late Sir David Ferrier. I have accepted this invitation with feelings of gratitude, not only to your Council, but also for the contributions made in this country to our knowledge of the structure and function of the nervous system. Among these, the works of Sir David Ferrier, however prominent, only stand out as a conspicuous example of a national tradition, maintained in recent years, both in the Physiology and Anatomy of the brain. The task I have accepted is not an easy one, the less so as the first Ferrier lecture was given by Sir Charles Sherrington who, in both the methods and results of his investigations, attained a degree of exactness at which morphologists aim in vain.


1998 ◽  
Vol 4 (6) ◽  
pp. 689-690
Author(s):  
Jarl Risberg

Imaging of the structure and function of the human brain has grown to an area with increasing impact on neuropsychological research as well as on the routine clinical evaluation of brain damaged patients. The scientific and popular literature is now flooded by increasingly more spectacular pictures of the brain. The images no longer only illustrate what is well known from earlier research but they do also sometimes provide information of importance for the further development of neuropsychological theories. The two volumes edited by Erin D. Bigler, Neuroimaging I and II, offer a possibility for neuropsychologists and other interested readers to get acquainted with the more recent developments in measurement technology and applications in basic science (Volume I) as well as in the clinic (Volume II). The authors of the 24 chapters are generally outstanding researchers, with impressive expertise within their fields of specialization.


1997 ◽  
Vol 3 (5) ◽  
pp. 347-355 ◽  
Author(s):  
Charles G. Gross

Leonardo Da Vinci had a deep interest in the structure and function of the body. His drawings are the oldest surviving naturalistic depictions of human anatomy. This article examines seven of his drawings of the nervous system. In the earlier ones, he is almost totally bound by medieval tradition. Later, his drawings become more closely tied to his own dissections, and he invents new ways of representing the results of anatomical investigation. NEUROSCIENTIST 3:347–354, 1997


Author(s):  
Bruce E. Wexler

This paper reviews the neuroscience foundation for understanding and harnessing neuroplastic processes that shape the structure and function of the human brain after birth, describes a newly developed, integrated series of computer presented and physical exercises to promote activity-related development of neurocognitive systems of attention and executive function in elementary school children, and reviews evidence of the efficacy of the program. The computer-presented brain exercises have new functionalities that more fully shape the training to each user’s individual profile of cognitive strengths and weaknesses than was previously possible. The programs also provide assessments of each child’s cognitive strengths and weaknesses based on built in formal tests of cognition and error analytic algorithms applied to 15-20,000 responses from each child while using the brain training program.


Cancers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2507
Author(s):  
Carla Mucignat-Caretta

The brain may be affected by a variety of tumors of different grade, which originate from different cell types at distinct locations, thus impacting on the brain structure and function [...]


2014 ◽  
Vol 155 (26) ◽  
pp. 1011-1018 ◽  
Author(s):  
György Végvári ◽  
Edina Vidéki

Plants seem to be rather defenceless, they are unable to do motion, have no nervous system or immune system unlike animals. Besides this, plants do have hormones, though these substances are produced not in glands. In view of their complexity they lagged behind animals, however, plant organisms show large scale integration in their structure and function. In higher plants, such as in animals, the intercellular communication is fulfilled through chemical messengers. These specific compounds in plants are called phytohormones, or in a wide sense, bioregulators. Even a small quantity of these endogenous organic compounds are able to regulate the operation, growth and development of higher plants, and keep the connection between cells, tissues and synergy beween organs. Since they do not have nervous and immume systems, phytohormones play essential role in plants’ life. Orv. Hetil., 2014, 155(26), 1011–1018.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Fatima Amer-Sarsour ◽  
Alina Kordonsky ◽  
Yevgeny Berdichevsky ◽  
Gali Prag ◽  
Avraham Ashkenazi

AbstractUbiquitylation and deubiquitylation play a pivotal role in protein homeostasis (proteostasis). Proteostasis shapes the proteome landscape in the human brain and its impairment is linked to neurodevelopmental and neurodegenerative disorders. Here we discuss the emerging roles of deubiquitylating enzymes in neuronal function and survival. We provide an updated perspective on the genetics, physiology, structure, and function of deubiquitylases in neuronal health and disease.


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