Frontiers of Neurology and Neuroscience

Tracing the history of neglect is intriguing, as diverse terminologies have been used to characterize a multi-factorial disorder with rather startling manifestations. In part, heterogeneous terms may have hinted at distinct subtypes. Thus, different variants of hemi-inattention and neglect relate conceptually, but may be functionally dissociable. Patients with neglect, acting as if the world-space they perceive is full, do not phenomenally experience the omissions or absences so patently obvious to an observer...

Of the main principles of human neuropsychology, the best known may be cerebral specialization: the left and right hemispheres play different roles in language and other higher-order functions. This chapter discusses when and how and by whom the differences were found. It begins with an account of Gall's cortical localization theory, which set the stage. It then describes the discoveries themselves, reviews how the differences were explained, and concludes with a summary of further developments.

Elements of "frontal" syndromes and executive dysfunction have been pondered by humans since ancient times, perhaps because executive dysfunction often threatens the very characteristics that make us human. This chapter provides a historical account of scientific advancements related to frontal lobe functioning and how the term has transformed over time. From ancient Greek philosophy to early neuroscientific animal studies to the default mode network, knowledge about the neural underpinnings of executive functioning has blossomed, almost so broadly that the behemoth term comprising broad neuropsychological functions may struggle to be provide specificity on its own without further clarification...

The kanji and kana (or kanji vs. kana) problem in the Japanese language denotes the dissociation between kanji (morphograms) and kana (phonograms) in reading/comprehension and writing. Since paragraphia of kana in a patient with amyotrophic lateral sclerosis was first reported in 1893, kanji-kana dissociation has been the central topic in Japanese aphasiology. Recent advancements in lesion-to-symptom analyses and functional imaging studies have identified some areas whose damage causes dissociative disturbances of reading or writing between kanji and kana...

Studies of alexia and agraphia have played historically important roles in efforts to understand the relation between brain and behavior. In the second half of the 19th century, works by Paul Broca and Carl Wernicke led to the concept of delimited cortical centers in the left cerebral hemisphere concerned with discrete aspects of spoken and written language. These specialized centers were linked by white matter pathways. Charlton Bastian, Jean-Martin Charcot, Sigmund Exner, and Jules Dejerine championed center-pathway models of reading and writing...

We live in a world surrounded by sound. Throughout life, we are exposed to music: from lullabies and songs taught at school to instrumental music both heard and played for pleasure. Every nation, along with its own language, has unique forms of music and dance. "Music knows no boundaries," as the saying goes. Just as language impairment is known as "aphasia," impairment of the perception of music is called "amusia." In this article, we will first classify the types of amusia. This will be followed by an introduction to the classical research of Salomon Eberhard Henschen (1847-1930), and to a discussion of higher auditory functions in which we highlight cases of amusia encountered in a person and through the literature...

Even if Babinski (1914) is usually considered as the discoverer of anosognosia, other authors before him contributed to the development of this construct. Von Monakow (1885) and Dejerine and Vialet (1893) gave the first descriptions of patients with cortical blindness who were unaware of their disability, but did not distinguish this unawareness from the rest of the clinical description. Anton (1999) described patients with cortical deafness and cortical blindness, considering these defects of awareness as a symptom independent from the neurological dysfunction...

In this chapter, I will present an overview of early case descriptions of specific isolated cognitive deficits in children for which no clear brain impairment could be demonstrated and which were therefore considered to be congenital or developmental in nature. Three kinds of syndromes will be discussed. First, more general deficits like the attention and hyperactivity disorder and congenital aphasia will be presented. The second category relates to the more specific cognitive deficits, like developmental prosopagnosia, that have been reported, especially from the early 1980s onwards...

The representation of cognitive function in the cerebral cortex has a long and cherished history, but much evidence also supports a critical role of subcortical structures in the operations of cognition. The idea of subcortical dementia, first proposed in 1932 and substantially expanded in the 1970s, is the most prominent formulation intended to capture the phenomenology of cognitive impairment attributable to subcortical involvement. Despite criticism highlighting its imprecision, subcortical dementia has endured as a useful general concept assisting the classification of dementia syndromes based on the primary site(s) of neuropathology...

This chapter pays homage to the masters who made neuropsychology an esteemed and legitimate field in the 19th and 20th centuries. Here we offer a brief biography for each of them and an analysis of their discoveries: Théophile Alajouanine (1890-1980), Henry Charlton Bastian (1837-1915), Arthur L. Benton (1909-2006), Julian de Ajuriaguerra (1911-1993), Ennio De Renzi (1924-2016), Norman Geschwind (1926-1984), Kurt Goldstein (1878-1965), Henry Head (1861-1940), Henry Hécaen (1912-1983), Pierre Janet (1859-1947), François Lhermitte (1921-1998), Jean Lhermitte (1877-1959), Hugo Karl Liepmann (1863-1925), Heinrich Lissauer (1861-1891), Alexander Romanovich Luria (1902-1977), Brenda Milner (1918-), Théodule Ribot (1839-1916), Charles Richet (1850-1935), Paul Sollier (1861-1933), and Carl Wernicke (1848-1905)...

In 1943, Tsuneo Imura, a neuropsychiatrist at Tokyo University, proposed a new aphasic syndrome and designated it as Gogi (word meaning) aphasia. According to Imura, it is characterized by (1) difficulty in comprehending spoken words despite good perception of sound, (2) disorders of expression due to loss of vocabulary and verbal paraphasia, (3) preserved ability of repetition, and (4) selective difficulty in reading and writing kanji (Japanese logographic character) with preserved ability of reading and writing kana (Japanese syllabic character)...

In a series of papers which appeared in 1906, Pierre Marie advanced a new concept of aphasiology against the classical view based on functional localization of cerebral cortex. He denied the role of Broca's area in language function and proposed as the center for articulation "zone lenticulaire," the lesion of which causes anarthria. But his illustration of "zone lenticulaire" which appears repeatedly in his papers dealing with aphasia, is anatomically incorrect since the most important portions of Broca's area, opercular part and triangular part of the inferior frontal gyrus are missing in his illustration...

No abstract text is available yet for this article.

Franz Kafka's Letter to His Father is one of the greatest examples in world literature of memory of a traumatic childhood. In it, the author takes a retrospective journey through his life, recollecting and analyzing the reasons for the estrangement and hostility between a father and a son. This essay considers Letter to His Father in the light of current knowledge about autobiographical memory. The essay first sets forth basic aspects of Kafka's life in order to place Letter to His Father in the context of Kafka's biography, and then presents Kafka's relevance to the literature and thought of the twentieth and twenty-first centuries...

Machado de Assis (1839-1908) suffered from temporal lobe epilepsy, probably with origin in the non-dominant hemisphere. The evidence for this is provided by the detailed reports of the characteristics of his seizures by his contemporaries and by his correspondence with other writers. He was treated with bromides and homeopathy. It is unclear whether his neurological disorder influenced his artistic performance. What is evident is that he was deeply ashamed of the disease - he avoided the word "epilepsy" and just wrote about it in his personal correspondence with friends in the last years of his life...

Raymond Roussel (1877-1933) was an eccentric writer whose strange novelistic and theatrical work was launched by the surrealists and is still worshipped by the French intelligentia. While writing his first text at the age of 19 years, he presented a delusional episode marked by the conviction that he was shining like a sun and that he had acquired universal glory. He "fell back to earth" when the book was published and he realized that no one was stopping to gaze at him. He later led a ritualized life, continuing to write and eventually achieving success - glory even - with the champions of the surrealist revolution, who saw the genius in him...

Visual art is one of the means of non-verbal communication that bypasses cultural, societal, language and, more importantly, time differences. It allows for establishing a multilevel connection between the artist and art receiver. Production of visual art is a form of expression of emotions. Art reception involves the initiation of a cascade of emotions and thoughts based on visual input. One of the ways to express artistic content is through abstraction. Abstract visual art is based on portraying elements that do not represent any real, objective shapes, with the means of lines, colours, tones and texture...

The famous poet Arthur Rimbaud (1854-1891) stopped writing poetry at 21 years and subsequently had a rather adventurous life mainly in the Arabic peninsula and Ethiopia. He died at 37 years, only a few months after the amputation of his right lower limb due to a developing tumor in the knee, which probably was an osteosarcoma in the lower third of the femur. His letters to his sister Isabelle suggest that he suffered from severe stump pain rather than phantom limb, but since he lived only shortly after surgery (he developed extensive carcinomatosis), one does not know whether a full phantom would have developed and how this would have affected his subsequent life...

The issue of First World War shell shock has been documented mainly from a medical perspective. Many medical texts dealing with war psychoneuroses and their aggressive treatments, such as electrotherapy, were published during the war. Accounts from shell-shocked soldiers are rare. Nevertheless, shell shock was described from a non-medical point of view by a few writers who had undergone or witnessed this pathology. Their texts deal mainly with the psychiatric forms, the most striking ones, but also with the more common concepts of commotion, emotion and pathological fear...

No abstract text is available yet for this article.