#frontal lobe
- Abasia — A neurological and neuropsychiatric symptom characterized by the total or partial inability to walk, whereas muscular strength, coordination of movements in the recumbent position, and sensation in the legs remain completely intact. It can have an organic cause, linked to lesions of the frontal lobe, cerebellum, or vestibular pathways, or a functional (psychogenic) cause, encountered within conversion (dissociative) disorders, where it is frequently associated with astasia (the inability to stand).
- Abulias — The plural form of the neological noun 'abulie', designating the pathological states characterized by the total absence or severe diminution of willpower, decision-making capacity, and the impulse to act. Frequently manifesting as core symptoms in major depressive episodes, schizophrenia, or neurological disorders of the frontal lobe, these disturbances block an individual's ability to initiate and sustain goal-directed activities, despite their physical and intellectual capacities remaining intact.
- Abulia — A severe mental disorder or neurological symptom characterized by the total absence or pathological diminution of willpower, initiative, and decision-making power. The affected individual retains awareness of necessary actions and possesses intact intellectual or motor functions, yet remains biologically and psychically unable to generate the internal impulse indispensable for initiating and sustaining a voluntary act, a manifestation frequently associated with frontal lobe lesions, schizophrenia, or major depression.
- Allokinesia — A neurological motility disorder characterized by the erroneous execution of a movement or by the involuntary moving of a limb in the opposite direction to that requested or intended by the patient. This structural motor dysfunction phenomenon is often associated with bilateral or unilateral frontal lobe lesions, basal ganglia dysfunction, or complex motor neglect syndromes.