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30 results

Page 1 of 2

  • 6 - Arousal
  • from Section I - Structural and Functional Neuroanatomy
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Book: Behavioral Neurology & Neuropsychiatry
  • Published online: 05 February 2013
  • Print publication: 24 January 2013, pp 88-97
  • View extract

    Summary

    The arousal system involves multiple distributed neural networks working in harmony to permit normal sleep-wake cycles, satisfy internal drive states, and respond to environmental demands. Disorders of arousal involve pathology of the brainstem, thalamus, or widespread areas of both cerebral hemispheres. A parallel series of distinct neural networks using dopamine, histamine, serotonin, acetylcholine, and norepinephrine as neurotransmitters originates in the brainstem. Brain death represents the most severe disturbance of arousal, with total and irreversible cessation of any brain function. Coma is the state of neurological unconsciousness exhibited by unarousable unawareness of the external environment that is due to extensive damage to or depressed function of both cerebral hemispheres, bilateral diencephalic structures, or the ascending reticular activating system. A specific rehabilitative strategy is coma stimulation, in which structured sensory stimulation is administered for the purposes of improving sensory awareness and facilitating improvements in arousal and awareness.
  • Section III - Treatments in Behavioral Neurology & Neuropsychiatry
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Book: Behavioral Neurology & Neuropsychiatry
  • Published online: 05 February 2013
  • Print publication: 24 January 2013, pp 498-648
  • View abstract

    Summary

    This chapter presents an overview of the mental status examination, its core elements, and its most commonly used methods. The mental status examination focuses on cognitive, emotional, behavioral, and related sensorimotor functions and their disturbances - i.e., neuropsychiatric symptoms, signs, and syndromes. Through observation, interview, and testing, the mental status examination identifies the symptoms and signs of structural and/or functional disturbances of the brain. Neuropsychiatric symptoms and signs are sometimes categorized as positive or negative. Atypical clinical presentations sometimes are neurological condition-specific variants of typical neuropsychiatric syndromes. The observational components of the mental status examination are undertaken at the first moment of any form of contact with a patient and continue throughout the entire clinical encounter. Observation continues throughout the clinical interview, during which the examiner attends to the patient's appearance, behavior, statements, manner of communicating, and interpersonal interactions with examiner.
  • 1 - Introduction
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Book: Behavioral Neurology & Neuropsychiatry
  • Published online: 05 February 2013
  • Print publication: 24 January 2013, pp 1-11
  • View extract

    Summary

    Neurology and psychiatry are securely established medical specialties with well-demarcated areas of clinical and research expertise. Behavioral neurology (BN) is widely held to have begun with the work of Norman Geschwind in the mid-twentieth century. A neuropsychiatric approach to patient care began to reemerge and steadily gain momentum as physicians increasingly appreciated the neurologic bases of psychiatric disease and the psychiatric aspects of neurologic disease. The prospect of BN and neuropsychiatry (NP) drawing together finds considerable support in academia. Annual scholarly meetings are held conjointly by the Society for Behavioral and Cognitive Neurology and the American Neuropsychiatric Association in order to disseminate new research findings and educate practitioners. Traumatic brain injury occupies a major portion of the practice of many subspecialists in BN&NP and additional studies are needed to better define the best methods of neurorehabilitation.
  • Section I - Structural and Functional Neuroanatomy
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Book: Behavioral Neurology & Neuropsychiatry
  • Published online: 05 February 2013
  • Print publication: 24 January 2013, pp 12-309
  • View extract

    Summary

    This chapter focuses on aspects of structural and functional neuroanatomy relevant to Behavioral Neurology & Neuropsychiatry (BN&NP). It considers the general structure of the brain from the brainstem through the cerebral cortex, including a review of white matter anatomy, the cerebral vasculature, and the ventricular system. The brainstem comprises the medulla oblongata, pons and cerebellum, and midbrain. Each of these areas and the neurobehaviorally salient structures they contain are reviewed briefly in the chapter. The reticular formation (which is contributed to by several brainstem substructures) and the cranial nerves (some, but not all, of which are located within the brainstem) also are discussed in the chapter. The diencephalon includes the thalamus, metathalamus (medial and lateral geniculate nuclei), epithalamus (habenula, stria medullaris, and pineal body), and subthalamus. The chapter considers briefly the thalamus, hypothalamus (and pituitary), and the epithalamus.
Behavioral Neurology & Neuropsychiatry
  • Behavioral Neurology & Neuropsychiatry
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Published online: 05 February 2013
  • Print publication: 24 January 2013
  • View description
    The merger of behavioral neurology and neuropsychiatry into a single medical subspecialty, Behavioral Neurology & Neuropsychiatry, requires an understanding of brain-behavior relationships and a clinical approach that transcends the traditional perspectives of neurology and psychiatry. Designed as a primer of concepts and principles, and authored by a multidisciplinary group of internationally known clinical neuroscientists, this book divides into three sections:Structural and Functional Neuroanatomy (Section I) addresses the neuroanatomy and phenomenology of cognition, emotion, and behaviorClinical Assessment (Section II) describes neuropsychiatric history taking, neurological and mental status examinations, neuropsychological assessment, and neuroimaging, electrophysiologic, and laboratory methodsTreatment (Section III) discusses environmental, behavioral, rehabilitative, psychological, social, pharmacological, and procedural interventions for cognitive, emotional, and behavioral disorders.By emphasizing the principles of Behavioral Neurology & Neuropsychiatry, this book will improve your understanding of brain-behavior relationships and inform your care of patients and families affected by neurobehavioral disorders.
  • 2 - Behavioralneuroanatomy
  • from Section I - Structural and Functional Neuroanatomy
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Book: Behavioral Neurology & Neuropsychiatry
  • Published online: 05 February 2013
  • Print publication: 24 January 2013, pp 12-31
  • View extract

    Summary

    This chapter focuses on aspects of structural and functional neuroanatomy relevant to Behavioral Neurology & Neuropsychiatry (BN&NP). It considers the general structure of the brain from the brainstem through the cerebral cortex, including a review of white matter anatomy, the cerebral vasculature, and the ventricular system. The brainstem comprises the medulla oblongata, pons and cerebellum, and midbrain. Each of these areas and the neurobehaviorally salient structures they contain are reviewed briefly in the chapter. The reticular formation (which is contributed to by several brainstem substructures) and the cranial nerves (some, but not all, of which are located within the brainstem) also are discussed in the chapter. The diencephalon includes the thalamus, metathalamus (medial and lateral geniculate nuclei), epithalamus (habenula, stria medullaris, and pineal body), and subthalamus. The chapter considers briefly the thalamus, hypothalamus (and pituitary), and the epithalamus.
  • 38 - Proceduralinterventions
  • from Section III - Treatments in Behavioral Neurology & Neuropsychiatry
  • Edited by David B. Arciniegas, C. Alan Anderson, Christopher M. Filley
  • Book: Behavioral Neurology & Neuropsychiatry
  • Published online: 05 February 2013
  • Print publication: 24 January 2013, pp 627-648
  • View abstract

    Summary

    Magnetoencephalography (MEG) systems use superconducting electronics and magnetic shielding to detect the magnetic fields generated by synaptic neuronal activity. This chapter focuses on two types of quantitative analyses of human electrophysiological data: spectral analysis methods and evoked potentials. Spectral analysis of Electroencephalography (EEG) and MEG signals across multiple sensor locations reveals clear spatial patterns. EEG and MEG activity can be subdivided into three major subdivisions: spontaneous activity, evoked responses, and induced responses. Evoked responses are time domain averages across multiple trials of a repeating stimulus or response. Electroencephalographic and MEG methods based on time-frequency transformation are usually concerned with capturing changes in the brain's oscillatory phenomena produced by stimuli, mental events, or responses. A valid measure of connectivity between regions of the brain engaged in the same cognitive process or behavior is among the most highly prized uses of EEG and MEG data.

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