Neuro-Wk 1

The scientific study of the nervous system, aiming to understand brain structures and mechanisms involved in acquiring and regulating mental functions and skilled actions.

The diagnosis and treatment of nervous system disorders.

The structural framework of the nervous system.

It helps to understand the neurological issues underlying communication disorders, provides a basis for diagnosis and treatment, and aids in differentiating normal versus abnormal function.

It helps diagnose and treat communication disorders and understand the neurologic correlates of sensorimotor behaviors.

The brain is highly connected, with functionally specific sensory and motor brain regions connected through association and commissural fibers, forming an integrated network that processes information from multiple sources.

The CNS is the decision-maker, integrating all incoming and outgoing information and analyzing multiple sources simultaneously to generate responses.

Lower levels, such as the spinal cord, manage basic functions like reflexes, while higher levels, like the cerebral cortex, handle complex sensorimotor integration and higher mental functions.

The brain has bilateral anatomic symmetry but unilateral functional differences, with the left hemisphere primarily responsible for language and analytical thinking and the right hemisphere for emotions, music, and prosody.

Each hemisphere of the brain controls the opposite side of the body, with fibers crossing at the midline.

Different parts of the brain are organized to perform specific functions, such as sensory and motor processing, which work together in coordinated ways.

The brain's sensory and motor systems are arranged in orderly topographic maps representing receptor surfaces or body movements, such as the somatotopic organization of the motor cortex.

The auditory system is organized based on sound frequency, with different frequencies processed in specific areas of the brain.

The brain's ability to change and adapt its structure and function in response to learning, experience, or injury.

The brain’s functioning is not influenced by personal characteristics like gender, color, or cultural variations, and is judged by the efficiency of information processing.

Cerebrum, Corpus Callosum, Thalamus, Brainstem (Midbrain, Pons, Medulla), and Cerebellum.

It is responsible for higher mental functions, such as thought, memory, and action.

It connects the two hemispheres of the brain and facilitates communication between them.

It acts as a relay station for sensory and motor signals to the cerebral cortex.

The brainstem consists of the midbrain, pons, and medulla, which regulate vital functions like breathing, heart rate, and consciousness.

It coordinates balance, motor planning, and voluntary movement.

Neurons are the basic functional units of the central nervous system, specialized for communication within the body.

Neurons share the same basic structure but vary in size and shape, and they communicate through electrical and chemical signals.

Glial cells support neurons by regulating fluid levels, removing foreign materials, and maintaining brain metabolism.

Damage to specific brain areas can lead to distinct behavioral and communicative dysfunctions, such as speech production issues or auditory comprehension difficulties.

Broca identified the link between the frontal lobe and speech production, while Wernicke connected the temporal lobe with auditory comprehension.

Vascular issues (e.g., thrombosis), neoplasms (e.g., tumors), degenerative conditions (e.g., cell death), infections (e.g., encephalitis), traumatic brain injuries, and developmental disorders (e.g., autism).

Lesions that affect the same side of the body as the brain injury.

Lesions that affect the opposite side of the body relative to the brain injury.

Superior (above), inferior (below), anterior (front), posterior (back), medial (middle), lateral (side), rostral (toward the nose), caudal (toward the tail), dorsal (back), and ventral (belly).

The body is erect with palms and arms facing forward, and directional terms are based on this position.

Sagittal (divides the body into right and left), Coronal (divides the body into front and back), and Transverse (divides the body into upper and lower parts).

In anatomical orientation, the left and right sides correspond to the patient’s left and right, while in clinical orientation, the sides are reversed as if viewed from the patient’s feet.

It is the decision-maker for integrating sensory and motor information and generating appropriate responses.

A condition characterized by difficulties in speech production due to damage to Broca's area in the frontal lobe.

A condition where auditory comprehension is impaired due to damage to Wernicke's area in the temporal lobe.