C. Neuronal activity of cortical and thalamic neurons becomes synchronized during a primary generalized seizure. The depolarization is dependent on conductances.

Slides:



Advertisements
Similar presentations
1 Chapter 40 The Epilepsies: Phenotypes and Mechanisms Copyright © 2012, American Society for Neurochemistry. Published by Elsevier Inc. All rights reserved.
Advertisements

02-02 W. W. Norton Carpenter, M., Human Neuroanatomy, 7th edition. Baltimore, Maryland: William & Wilkins, © 1976 by Williams & Wilkins.
The pupillary light reflex is an important sign for determining the level of a brain stem lesion. In patients with depressed consciousness caused by metabolic.
C. The consequences of synaptic integration in ganglia 9 and 10 can be studied by selectively stimulating preganglionic inputs to B or C neurons and observing.
C. Selective stimulation of the two types of gamma motor neurons has different effects on the firing of the Ia fibers from the spindle. Without gamma stimulation.
Automatisms with preserved responsiveness were observed exclusively during seizures arising from the right nondominant temporal lobe. They were not observed.
C. When the weight is larger than expected, the object slips initially, but force is increased before lifting begins. When the subject begins to lift a.
B. Many muscles cross more than one joint to exert an effect on more than one body segment. For example, the hamstring muscles of the leg accelerate the.
B. In the actual case in which the ACh receptor-channel is permeable to both Na+ and K+, experimental results show that the end-plate current reverses.
C. Transgenic mice that express the CaMKII-Asp286 kinase and receive doxycycline perform as well as wild-type mice in learning the Barnes maze task (approximately.
BIOPHYSICS 6702 – ENCODING NEURAL INFORMATION
Labeled urea breath test to detect Helicobacter infection
Degradation. At the postsynaptic neuron tropolone inhibits the enzyme catechol-O-methyltransferase (COMT), which inactivates norepinephrine (6a). Normetanephrine.
B. Physicochemical features of the AQP1 water channel
D. Site of stroke is on the left parieto-frontal region
(Reproduced with permission from Jemal A, et al: Cancer statistics, CA Cancer J Clin 58:71, 2008.) Source: Chapter 17. The Breast, Schwartz's Principles.
B. The two hypothetical synergies in part A can generate the unique tuning curves for muscles M1 to M3 in response to all 16 directions of translation.
C. Asynchronous background input alone drives a low level of firing even in the absence of any signaling input, as seen by the two spikes that occur in.
D. The neural tube bends at the cephalic, pontine, and cervical flexures. Source: Patterning the Nervous System, Principles of Neural Science, Fifth Editon.
E. Dopaminergic neurons are located in the midbrain and hypothalamus
Outcomes after surgery, cortical resection, or hemispherectomy in infants with catastrophic focal epilepsy are very good. About 75–78% are seizure-free.
C. Nerve conduction studies demonstrate changes characteristic of an axonal neuropathy. When the ulnar nerve is stimulated above the elbow or at the wrist,
The eight single-neuron vector clusters and the population vectors shown here represent the activity of the same population of cells during reaching movements.
E. Dopaminergic neurons are located in the midbrain and hypothalamus
[From Pansky B: Review of Gross Anatomy, 6th ed
C. When muscle is diseased the number of muscle fibers in each motor unit is reduced. Some muscle fibers innervated by the two motor neurons shrink and.
A close relationship exists between heterotopic nodules and cortical regions in bilateral PNH, with an epileptogenic network including both structures.
B. More recent studies have subdivided the premotor cortex of macaque monkeys into several more functional zones with different patterns of cortical and.
B. Breathing becomes unstable during sleep at high altitudes in most normal individuals. The upper trace shows an example of a Cheyne-Stokes breathing.
(A). Systemic infusion of opioids. (B) Epidural infusion of opioids
A conceptual model of cardiac membrane fast sodium and slow calcium ion channels: at rest (A), during the initial phases of the fast-response (B and C),
A standard epidural order form.
E. Dopaminergic neurons are located in the midbrain and hypothalamus
The gate theory proposed that small (C) fibers activated excitatory systems (black neuron) that subsequently excited output cells—these latter cells had.
Neurons and other cells express a conserved death program
B. Transmitter release is measured by amperometry
Criteria used to determine breath types during mechanical ventilation
Pedal venous pressure measurements with exercise
[Reproduced with permission from Healey JE, Hodge J (eds): Surgical Anatomy, 2nd ed. Toronto: BC Decker, 1990, p 153.] Source: Chapter 35. Abdominal Wall,
C. Time-lapse cinematography captures the divisions and differentiation of isolated cortical progenitor cells in the rodent. Lineage diagrams illustrate.
Patients presenting with clinical features compatible with MAE but with seizure semiology consistent with focal seizure or focal abnormality seen in the.
Self-portraits by an artist following damage to his right posterior parietal cortex. Each portrait was drawn at a different time after the stroke: at 2.
C. The giant presynaptic terminals of bipolar neurons in the retina are more than 5 μm in diameter, permitting direct patch-clamp recordings of membrane.
D. A view of ion permeation through the channel illustrates the changes in occupancy of the various K+ binding sites. A pair of ions hops in concert between.
Kaplan-Meier survival for adult heart transplants performed between January 1982 and June 2006 by era. All comparisons are significant at p < (Reproduced.
(Reproduced with permission from Afifi AK, Bergman RA
(Reproduced with permission from Amato AA, Russell JA
(Reproduced, with permission, from Emiliano Chavira, MD.)
Chapter 7 Voluntary Movement.
Regulation of gating in ion channels
The hypothalamus controls the pituitary gland both directly and indirectly through hormone- releasing neurons. Neurons in the magnocellular neuroendocrine.
C. As the result of an MS plaque involving the posterior columns of the cervical cord, patients may experience an electric shock-like sensation traveling.
Adult basic life support health care provider algorithm
C. Inhibitory interneurons in a relay nucleus are activated by three distinct excitatory pathways. Feed-forward inhibition is produced by the afferent.
B. Sensory information is weighted dynamically to maintain balance and orientation under varying conditions. The figure illustrates findings from an experiment.
C–D. Micrographs of a dorsal root ganglion cell (C) and a motor neuron (D) show the organelles in the cell body that are chiefly responsible for synthesis.
C. A peripheral nerve fiber is myelinated by a Schwann cell in several stages. In stage 1 the Schwann cell surrounds the axon. In stage 2 the outer aspects.
B. The discharge rate in the Ia sensory fiber of a spindle increases during slow flexion of a finger. This increase depends on alpha-gamma co-activation.
B. A deletion of genomic DNA encompassing only a single exon results in the clinically severe Duchenne muscular dystrophy. A larger deletion encompassing.
[From: Galli : et al: Emergency Orthopedics: The Spine
B. Physicochemical features of the AQP1 water channel
C. The arcuate neurons shown in part B project to multiple regions of the hypothalamus. The paraventricular nucleus (PVN) is a convergence zone for many.
C. As the result of an MS plaque involving the posterior columns of the cervical cord, patients may experience an electric shock-like sensation traveling.
Take a detailed history of the description of the event, precipitants, duration, and postevent behavior. Does history suggest an epileptic seizure disorder?
Explaining the action potential with channels, ions, and voltages
Copyright © The McGraw-Hill Companies, Inc
Volume 32, Issue 3, Pages (November 2001)
Action potentials.
Copyright © The McGraw-Hill Companies, Inc
Intracellular Ca2+ Release and Ischemic Axon Injury
Presentation transcript:

C. Neuronal activity of cortical and thalamic neurons becomes synchronized during a primary generalized seizure. The depolarization is dependent on conductances in AMPA-type glutamate receptor-channels and T-type voltage-gated Ca2+ channels. The repolarization is caused by GABA-mediated inhibition as well as voltage- and calcium-dependent K+ conductances (g K). (Reproduced, with permission, from Lothman 1993a.) Source: Seizures and Epilepsy, Principles of Neural Science, Fifth Editon Citation: Kandel ER, Schwartz JH, Jessell TM, Siegelbaum SA, Hudspeth AJ, Mack S. Principles of Neural Science, Fifth Editon; 2012 Available at: http://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/1049/kan_ch50_f012.png&sec=59145717&BookID=1049&ChapterSecID=59138682&imagename= Accessed: November 12, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.