Defining the Motor System: Structure and Function The motor system constitutes the vast and intricate network spanning the central and peripheral nervous systems, designed specifically for the generation, control, and execution of movement. It is defined as the entire complex network of skeletal muscles, the dedicated neural connections linking these muscles, and the diverse structures […]
Introduction and Definition of the Peripheral Nervous System (PNS) The Peripheral Nervous System (PNS) comprises the entirety of the neural structure that resides exterior to the confines of the Central Nervous System (CNS), specifically excluding the tissue contained within the cranium and the spinal column. Serving as the essential communication bridge, the PNS is responsible […]
Definition and Fundamental Tenets of Peripheralism Peripheralism is a specific theoretical orientation within the field of psychology, predominantly associated with certain schools of behaviorism, which fundamentally asserts that the primary determinants or components of psychological phenomena and behavior reside in the physical actions and physiological states occurring at the periphery of a living being. This […]
Introduction to the Preganglionic Autonomic Neuron The preganglionic autonomic neuron constitutes the fundamental initial efferent pathway within the two-neuron chain that characterizes the Autonomic Nervous System (ANS), the division responsible for the involuntary control of visceral functions necessary for maintaining internal homeostasis. These neurons are defined by the strict location of their cell bodies exclusively […]
Neural Tracts: The Pathways of Psychological Function The Core Definition of a Tract A tract, in the context of the neurosciences which heavily informs modern psychology, is defined as a bundle or set of nerve fibers, specifically axons, that are situated within the Central Nervous System (CNS). This definition distinguishes tracts from nerves, which carry […]
regions inside the CNS that bring on a reaction or steer the interest of higher up neurological centers toward plausible risks. Mostly imperative to this is the excitement tool of the reticular development in the brain-stem. ALERTING MECHANISMS: “Without alerting mechanisms, our body would not know when to go into fight or flight mode.”
The Blood-Brain Barrier in Psychology and Neuroscience The Core Definition and Function The blood-brain barrier (BBB) is a highly specialized, semipermeable membrane structure separating the circulating blood from the brain parenchyma and the central nervous system (CNS) fluid. Fundamentally, the BBB is not a simple physical wall, but rather a dynamic, functional interface composed of […]