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Nervous Systems
Nervous Systems

...  The right and left halves of the brain are connected by the corpus callosum.  The left side of the brain is associated with language, mathematical abilities, and learning.  The right side of the brain is associated with spatial, intuitive, musical, and artistic abilities. ...
AP Practice unit 3 and 4
AP Practice unit 3 and 4

... B) hypothalamus. C) sensory cortex. D) reticular formation. E) limbic system. ...
Motor control_6
Motor control_6

... Components of a Somatic Sensory system Provides ...
Action potentials
Action potentials

... • Motor responses can originate from any one of three levels – Spinal cord – Lower regions of the brain – Motor areas of the cerebral cortex • Motor responses for more complex movement patterns typically originate in the motor cortex • A motor reflex is integrated by the spinal cord without consciou ...
Slide ()
Slide ()

... The spinal cord varies slightly in diameter along its length but in cross section always shows bilateral symmetry around the small, CSF-filled central canal (C). Unlike the cerebrum and cerebellum, in the spinal cord the gray matter is internal, forming a roughly H-shaped structure that consists of ...
Slide 1
Slide 1

... Hair cells are deflected as sound waves move through the cochlea Action potentials are sent to the brain via the auditory nerve ...
The Nervous System
The Nervous System

... 3. Messages carried by nerve cells are called impulses . ...
A horizontal spinal cord slice preparation for studying descending
A horizontal spinal cord slice preparation for studying descending

... Since the introduction and widespread use of in vitro spinal cord slice preparations, studies of evoked synaptic transmission in spinal neurons have concentrated on inputs from two sources; those from primary afferents and local circuit neurons. This focus is due largely to practical considerations. ...
Spinal Cord – Gross Anatomy
Spinal Cord – Gross Anatomy

... Long and cylindrical 42cm in length and 1.8cm thick Has two enlarged portions o Cervical enlargement (C4 and T1)  Receives sensory input from the upper limbs  Sends motor output to the upper limbs o Lumbar enlargement (T9 and T12)  Receives sensory input from the lower limbs  Sends motor output ...
The Nervous System
The Nervous System

...  Bipolar: two processes, an axon and a dendrite (long in both directions)  Unipolar: single process that is very short and divided into proximal and distal fibers (PNS ganglia neurons)  See page 202 for a picture…ADD to ...
Sensation
Sensation

...  1) Place Theory: says we hear different pitch b/c different sound waves trigger activity in different places along the cochlea’s membrane -so the brain determines pitch by recognizing the place on the membrane from which it receives neural signals… EX: hi freq. = beginning of membrane; lo = end -- ...
Reflex Arc - Cloudfront.net
Reflex Arc - Cloudfront.net

... cord, nerves, and sense organs  Allows communication between different parts of the body  Allows you to sense (see, hear, etc.), comprehend, AND respond (usually muscle) to the environment ...
Neuroplasticity - University of Michigan–Flint
Neuroplasticity - University of Michigan–Flint

... • Common response following brain injury • Edema can be local or remote from the site of injury • Edema may compress neuron’s cell body or axon, causing focal ischemia, which disrupts neural function, including synthesis and transportation of neurotransmitter. Eventually the synapse become inactive ...
Nervous System Part 1
Nervous System Part 1

... At the peak of the action potential, the membrane potential is: (A) exactly at the Na+ equilibrium potential (B) close to but more positive than the Na+ equilibrium potential (C) close to but less positive than the Na+ equilibrium potential (D) exactly at 0 mV (E) the same as the resting membrane po ...
Mammalian Physiology Sensory Nervous System
Mammalian Physiology Sensory Nervous System

... Sensory Pathways Ascending Tracts Specific pathways – dorsal column medial lemniscus tract Sensory input from precise locations Discriminatory touch, vibrations Spinocerebellar tracts information from muscle or tendon stretch to cerebellum ...
Nervous System Peripheral Nervous System
Nervous System Peripheral Nervous System

... And there are just three types Sensory is the first has receptors They respond to stimuli Association's in brain and spinal cord Interpreting the info and passing on To move the motor neurons carry to the body Bring it to the glands Bring it to the muscles...oh oh oh oh oh Nervous System Spinal cord ...
The Nervous System
The Nervous System

... of the brain where each will be interpreted. -Screens out less significant stimuli (prevents sensory overload) ...
Sheep Brain Dissection - Michigan State University
Sheep Brain Dissection - Michigan State University

... to electrically stimulate this area in a sheep that was alive? The entire surface of the body is represented in the primary sensory cortex. Interestingly, some parts of the body have more cortical space that others. The figure below (right) is known as the homunculus and illustrates what the body wo ...
Locally evoked potentials in slices of the rat nucleus - UvA-DARE
Locally evoked potentials in slices of the rat nucleus - UvA-DARE

... although P2 was most clearly seen in the region surr o u n d i n g the A C and in other border regions of the Acb. T h e position of the stimulation electrode did not matter in this regard. In 8 slices the position of the recording pipette was varied with respect to the A C while the stimulation ele ...
Geen diatitel
Geen diatitel

... - Occur solely within the cortex, independent of activities in lower regions of the brain. ...
B6 Brain and Mind revised - Blackpool Aspire Academy
B6 Brain and Mind revised - Blackpool Aspire Academy

... The CENTRAL NERVOUS SYSTEM (CNS) enables us to react to our surroundings. It consists mainly of the brain, the spinal chord, nerve cells (“neurones”) and receptors. Types of receptor: 1) Light receptors in the eyes 2) Sound receptors in the ears 3) Taste receptors on the tongue 4) Smell receptors in ...
vikram_slides1
vikram_slides1

... later at f2  Monkey discriminates the difference f1 > f2 ?  Receives reward ...
Unit 10 Chapter 36 The Nervous System
Unit 10 Chapter 36 The Nervous System

... to the spinal cord & brain  Motor neurons carry impulses from the spinal cord & brain to the body  Interneurons are found within the spinal cord & brain, pass response impulses between sensory & motor ...
File
File

... found between the axon terminals of 1 neuron and the dendrites of another • A synaptic cleft is the tiny gap between the neurons at a synapse ...
Exploring the Human Nervous System
Exploring the Human Nervous System

... Saltatory conduction is faster than conduction on unmyelinated neurons. ...
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Evoked potential

An evoked potential or evoked response is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography (EEG), electromyography (EMG), or other electrophysiological recording method.Evoked potential amplitudes tend to be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to a volt for ECG. To resolve these low-amplitude potentials against the background of ongoing EEG, ECG, EMG, and other biological signals and ambient noise, signal averaging is usually required. The signal is time-locked to the stimulus and most of the noise occurs randomly, allowing the noise to be averaged out with averaging of repeated responses.Signals can be recorded from cerebral cortex, brain stem, spinal cord and peripheral nerves. Usually the term ""evoked potential"" is reserved for responses involving either recording from, or stimulation of, central nervous system structures. Thus evoked compound motor action potentials (CMAP) or sensory nerve action potentials (SNAP) as used in nerve conduction studies (NCS) are generally not thought of as evoked potentials, though they do meet the above definition.
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