BioH Nervous System PPT 2013
... Axon – the long extension that carries an impulse away from the cell body Myelin (myelin sheath) – insulating membrane surrounding most axons (roduced by Schwann cells) separated by small gaps (Nodes of Ranvier = “nodes”) Axon terminals – branches at the end of an axon Neurons may have many dendrite ...
... Axon – the long extension that carries an impulse away from the cell body Myelin (myelin sheath) – insulating membrane surrounding most axons (roduced by Schwann cells) separated by small gaps (Nodes of Ranvier = “nodes”) Axon terminals – branches at the end of an axon Neurons may have many dendrite ...
nerve impulse
... hemorrhage) a region of the brain or a vessel is obstructed by a clot. Brain tissue supplied with oxygen from that blood source dies, swelling occurs in the brain due to leaking of blood from ...
... hemorrhage) a region of the brain or a vessel is obstructed by a clot. Brain tissue supplied with oxygen from that blood source dies, swelling occurs in the brain due to leaking of blood from ...
Supplementary material 4 – Unified probability of spike
... spike variability values from our dataset. This was done to avoid needing to explicitly model the distribution of average spike variability values. Only biphasic spikes were included. In an actual recording, neurons within a brain region may have more similar biological characteristics than occurs b ...
... spike variability values from our dataset. This was done to avoid needing to explicitly model the distribution of average spike variability values. Only biphasic spikes were included. In an actual recording, neurons within a brain region may have more similar biological characteristics than occurs b ...
Development
... Axon Growth • Growth cones respond to chemicals. • Attraction and repulsion (e.g. slit and netrin, and their receptors). • Myelination of axons by oligodendoglia. ...
... Axon Growth • Growth cones respond to chemicals. • Attraction and repulsion (e.g. slit and netrin, and their receptors). • Myelination of axons by oligodendoglia. ...
Mind, Brain & Behavior
... dendrites taper. Axons have terminals (synapses) and no ribosomes. Dendrites have spines (punching bags). Don’t be fooled by the branches – both have them. ...
... dendrites taper. Axons have terminals (synapses) and no ribosomes. Dendrites have spines (punching bags). Don’t be fooled by the branches – both have them. ...
electrochemical impulse
... known as a stimulus, it has to be strong enough to trigger the depolarization of the membrane. • The intensity of the stimulus must reach a set level called the threshold level before the signal will be sent. This threshold is important for it prevents small changes that don’t have an effect from se ...
... known as a stimulus, it has to be strong enough to trigger the depolarization of the membrane. • The intensity of the stimulus must reach a set level called the threshold level before the signal will be sent. This threshold is important for it prevents small changes that don’t have an effect from se ...
doc Behavioural_Neuroscience_Jan_11
... spreading between adjacent axons Terminal buttons: button-like endings of the axon branch o They release neurotransmitters after receiving an action potential. o They connect with another neuron via a synapse. ...
... spreading between adjacent axons Terminal buttons: button-like endings of the axon branch o They release neurotransmitters after receiving an action potential. o They connect with another neuron via a synapse. ...
Copy Notes
... parietal lobes: portion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position occipital lobes: portion of the cerebral cortex lying at the back of the head; includes areas that receive information from the visual fields temporal l ...
... parietal lobes: portion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position occipital lobes: portion of the cerebral cortex lying at the back of the head; includes areas that receive information from the visual fields temporal l ...
BIOLOGY AND BEHAVIOR
... Neurons continued • Synapse: the space between the endings of the axon and the waiting dendrites. • Vesicles: containers in the axon bulb of the neurotransmitters. • Neurotransmitters: the chemicals that propel the message across the synapse from the end of the axon to the awaiting dendrite. Discov ...
... Neurons continued • Synapse: the space between the endings of the axon and the waiting dendrites. • Vesicles: containers in the axon bulb of the neurotransmitters. • Neurotransmitters: the chemicals that propel the message across the synapse from the end of the axon to the awaiting dendrite. Discov ...
Slide ()
... neuroendocrine system (blue) send their axons directly to the posterior pituitary (neurohypophysis) where they release the peptides vasopressin and oxytocin into the general circulation. Neurons in the parvicellular neuroendocrine system (yellow) send their axons to a venous portal system in the med ...
... neuroendocrine system (blue) send their axons directly to the posterior pituitary (neurohypophysis) where they release the peptides vasopressin and oxytocin into the general circulation. Neurons in the parvicellular neuroendocrine system (yellow) send their axons to a venous portal system in the med ...
File
... gestation). Commonly thought that once neurons die, they’re lost forever, but some scientists are challenging this assumption, saying that neurons can be regenerated. It’s currently unknown whether neurons can be regenerated. 3 parts: 1. Cell body (nucleus) 2. Dendrites (bring information into the c ...
... gestation). Commonly thought that once neurons die, they’re lost forever, but some scientists are challenging this assumption, saying that neurons can be regenerated. It’s currently unknown whether neurons can be regenerated. 3 parts: 1. Cell body (nucleus) 2. Dendrites (bring information into the c ...
SBI 4U Homeostasis 2
... • A system that uses ATP in order to keep the electrical potential difference across the membrane. • For every three sodium ions transported out of the cell, two potassium ions are transported into the cell. • An overall positive charge is going to accumulate on the outside of the cell membrane and ...
... • A system that uses ATP in order to keep the electrical potential difference across the membrane. • For every three sodium ions transported out of the cell, two potassium ions are transported into the cell. • An overall positive charge is going to accumulate on the outside of the cell membrane and ...
Excitatory_Inhibitory_Neural_Network_1
... Excitatory-Inhibitory Neural Network 1 From: Theoretical Neuroscience, by Peter Dayan and Larry Abbott, MIT Press, 2005 pp. 266-269 The system studied here is one the simplest types of neural networks to exhibit oscillatory activity. It can be regarded as a simplified model of a fully-connected netw ...
... Excitatory-Inhibitory Neural Network 1 From: Theoretical Neuroscience, by Peter Dayan and Larry Abbott, MIT Press, 2005 pp. 266-269 The system studied here is one the simplest types of neural networks to exhibit oscillatory activity. It can be regarded as a simplified model of a fully-connected netw ...
Neurons - Honors Biology 10 - 2222-03
... The Resting Neuron Neurons have a charge, or electrical potential, across their cell membranes. The inside of a neuron has a voltage of –70 millivolts (mV) compared to the outside. This difference is known as the resting potential. ...
... The Resting Neuron Neurons have a charge, or electrical potential, across their cell membranes. The inside of a neuron has a voltage of –70 millivolts (mV) compared to the outside. This difference is known as the resting potential. ...
10synapse & neurotransmitter
... On a given neuron, many other neurons come and synapse on it. It is called ‘Convergence’. • Due to convergence input, a single neuron is influenced by thousands of other cells. ...
... On a given neuron, many other neurons come and synapse on it. It is called ‘Convergence’. • Due to convergence input, a single neuron is influenced by thousands of other cells. ...
Endocrine and nervous system
... 3. Axon: long projection that carries impulses away from cell body ...
... 3. Axon: long projection that carries impulses away from cell body ...
Sensory neurons
... The ANS: Sympathetic and Parasympathetic The sympathetic and parasympathetic systems form the Autonomous Nervous System (ANS) which is responsible for controlling and regulating the body below a conscious level. While it was originally considered the sympathetic was ‘excitory’ and the parasympatheti ...
... The ANS: Sympathetic and Parasympathetic The sympathetic and parasympathetic systems form the Autonomous Nervous System (ANS) which is responsible for controlling and regulating the body below a conscious level. While it was originally considered the sympathetic was ‘excitory’ and the parasympatheti ...
Chapter 12-13 Summary
... The two cerebral hemispheres are the largest part of the brain. Their surface or cortex is gray matter, and their interior if white matter. The cortex is convoluted and has gyri, sulci, and fissures. The cerebral hemispheres are involved in logical reasoning, moral conduct, emotional responses, sens ...
... The two cerebral hemispheres are the largest part of the brain. Their surface or cortex is gray matter, and their interior if white matter. The cortex is convoluted and has gyri, sulci, and fissures. The cerebral hemispheres are involved in logical reasoning, moral conduct, emotional responses, sens ...
Project Self-Discovery
... that part does – People who are paralyzed can have tiny transmitters implanted in their brains that communicate their thoughts with computers ...
... that part does – People who are paralyzed can have tiny transmitters implanted in their brains that communicate their thoughts with computers ...
NEUROPHYSIOLOGY
... Describe resting membrane potential. Explain how action potentials are generated ...
... Describe resting membrane potential. Explain how action potentials are generated ...
Estimating Dynamic Neural Interactions in Awake Behaving Animals
... behavior and cognition, and this may be independent from spike rates of individual neurons. Consequently current analysis tools must be extended so that they can directly estimate timevarying neural interactions. The log-linear model is known to be useful for analysis of the correlated spiking activ ...
... behavior and cognition, and this may be independent from spike rates of individual neurons. Consequently current analysis tools must be extended so that they can directly estimate timevarying neural interactions. The log-linear model is known to be useful for analysis of the correlated spiking activ ...
Tutorial 10: Temporal and Spatial Summation Figure 10: Temporal
... of input from thousands of other neurons. Any combination of synapses on a given neuron may be active at any given time, and the rate of this activity at the synaptic level may vary. Whether or not threshold is reached, and an action potential generated, is dependent upon the spatial (i.e., multiple ...
... of input from thousands of other neurons. Any combination of synapses on a given neuron may be active at any given time, and the rate of this activity at the synaptic level may vary. Whether or not threshold is reached, and an action potential generated, is dependent upon the spatial (i.e., multiple ...