Aberrant Salience: Definition and Historical Context Aberrant salience is a foundational concept in contemporary psychopathology, offering a compelling neurobiological framework for understanding the emergence of positive psychotic symptoms, particularly delusions and hallucinations, most prominently observed in schizophrenia. Salience, in its typical function, refers to the cognitive process by which the brain attributes motivational, emotional, or […]
Acquired Brain Injury: Definition and Scope Acquired Brain Injury, commonly abbreviated as ABI, refers to any damage to the brain that occurs after birth and is not hereditary, congenital, degenerative, or induced by birth trauma. This broad definition encompasses a diverse range of neurological conditions resulting from both internal and external factors, fundamentally altering the […]
Introduction and Definition Akathisia is a debilitating psychomotor syndrome characterized by an intense, subjective feeling of internal restlessness and the subsequent compulsion to move. Derived from the Greek phrase meaning ‘inability to sit still,’ this condition is far more complex than simple agitation or restlessness associated with anxiety. It represents a severe adverse effect, most […]
The Biological Basis of Amyloid Beta The core pathology underlying amyloid-related cognitive alterations centers on the misfolding and aggregation of the Amyloid beta (Aβ) peptide, a small protein fragment derived from the larger transmembrane protein known as the Amyloid Precursor Protein (APP). APP is ubiquitously expressed throughout the body, playing roles in neuronal growth, synaptogenesis, […]
Introduction to Amyloid-Related Memory Impairment (ARMI) Amyloid-Related Memory Impairment, often abbreviated as ARMI, represents a critical stage in the continuum of Alzheimer’s Disease (AD) pathology, defined primarily by the presence of significant cerebral amyloid burden coupled with subtle, yet measurable, deficits in cognitive function, specifically episodic memory. This classification emerged from the necessity to identify […]
Introduction to Amyloid PET and Its Context Amyloid Positron Emission Tomography, commonly referred to as Amyloid PET, represents a pivotal advancement in the neuroimaging landscape, fundamentally altering the approach to diagnosing and researching Alzheimer’s Disease (AD). This diagnostic tool utilizes radiotracers that bind specifically to fibrillar beta-amyloid plaques within the brain, allowing for the visualization […]
Introduction and Definition of Anosodiaphoria Anosodiaphoria represents a distinct and clinically challenging neuropsychological phenomenon often observed following focal brain injury, typically involving the right hemisphere. It is fundamentally characterized by the patient’s striking indifference or lack of concern regarding a severe physical deficit, such as hemiparesis or hemianopia, despite the explicit acknowledgment of that deficit’s […]
Anosognosia for Motor Impairment Anosognosia for Motor Impairment (ANI) is a profound neurological condition characterized by a patient’s unawareness or denial of their own motor deficits, most commonly hemiplegia or hemiparesis following a stroke. Derived from the Greek meaning “lack of knowledge of disease,” anosognosia represents a failure of the brain’s self-monitoring and updating systems […]
Introduction to Anti-Epileptic Medications and Therapeutic Challenges Anti-epileptic medications (AEMs), also frequently referred to as anti-convulsant drugs, represent the cornerstone of treatment for epilepsy and various seizure disorders. Their primary therapeutic goal is the stabilization of neuronal membranes and the modulation of neurotransmitter activity to prevent the abnormal, synchronous firing of neurons that characterizes a […]
Introduction to Antiepileptic Drug Attitudes Antiepileptic drugs (AEDs) represent the cornerstone of treatment for epilepsy and various seizure disorders, serving to control seizure frequency and improve overall quality of life. Achieving therapeutic success, however, is heavily reliant upon consistent patient adherence to prescribed regimens. The concept of Antiepileptic Drug Attitudes encompasses the complex constellation of […]