Central nervous system
... • An action potential is a rapid change in polarity across a portion of an axonal membrane • An action potential is generated only after a stimulus larger than the threshold (-55mV) – Gated channel proteins • One channel protein suddenly allows sodium to enter the cell • Another channel protein allo ...
... • An action potential is a rapid change in polarity across a portion of an axonal membrane • An action potential is generated only after a stimulus larger than the threshold (-55mV) – Gated channel proteins • One channel protein suddenly allows sodium to enter the cell • Another channel protein allo ...
Secretion
... • The juxtaglomerular cells are cells that synthesize, store, and secrete the enzyme renin. • Specialized smooth muscle cells in the wall of the afferent arteriole that are in contact with distal tubule. • Have mechano-receptors for blood pressure • The macula densa is an area of closely packed spec ...
... • The juxtaglomerular cells are cells that synthesize, store, and secrete the enzyme renin. • Specialized smooth muscle cells in the wall of the afferent arteriole that are in contact with distal tubule. • Have mechano-receptors for blood pressure • The macula densa is an area of closely packed spec ...
Communication
... Certain types of snakes, such as rattle snakes, can detect infra-red radiation using a pit organ on their body. This means that they will hunt during the night or move into dark burrows and still be able to see and detect particular endotherms, for example the detection of mice, so this infra-red vi ...
... Certain types of snakes, such as rattle snakes, can detect infra-red radiation using a pit organ on their body. This means that they will hunt during the night or move into dark burrows and still be able to see and detect particular endotherms, for example the detection of mice, so this infra-red vi ...
Environmental Sensing and the Cellular Response
...
...
Dr. Corey’s lab wants to know how the brain makes sense of the sounds around us? Although this complicated process isn’t fully understood, an important first step is carried out by bundles of stereocilia on hair cells in the ear. These “hair bundles” look like sheaves of grain, ...
Cell-Type Specific Properties of Pyramidal
... Cell-Type Specific Properties of Pyramidal Neurons in Neocortex Underlying a Layout that Is Modifiable Depending on the Cortical Area ...
... Cell-Type Specific Properties of Pyramidal Neurons in Neocortex Underlying a Layout that Is Modifiable Depending on the Cortical Area ...
Online Textbook Worksheets
... • The axon is a long extension of the cell body that transmits nerve impulses to other cells. The axon branches at the end, forming axon terminals. These are the points where the neuron communicates with other cells. Myelin Sheath The axon of many neurons has an outer layer called a myelin sheath. M ...
... • The axon is a long extension of the cell body that transmits nerve impulses to other cells. The axon branches at the end, forming axon terminals. These are the points where the neuron communicates with other cells. Myelin Sheath The axon of many neurons has an outer layer called a myelin sheath. M ...
The hidden side of the UPR signalling pathway - Reflexions
... whose mother drank alcohol during the pregnancy. "These children have a flat midface, small eye openings, a short flat nose and, above all, microcephaly", Laurent Nguyen says. "Alcohol creates cellular stress which could also include stress in the endoplasmic reticulum in vivo. However, no-one has y ...
... whose mother drank alcohol during the pregnancy. "These children have a flat midface, small eye openings, a short flat nose and, above all, microcephaly", Laurent Nguyen says. "Alcohol creates cellular stress which could also include stress in the endoplasmic reticulum in vivo. However, no-one has y ...
Electron microscopical reconstruction of the anterior sensory
... The complete structure of the anterior sensory nervous system of the small nematode C . elegans h a s been determined by reconstruction from serial section electronmicrographs. There are 58 neurons in the tip of the head. Fiftytwo of these are arranged in sensilla. These include six inner labial sen ...
... The complete structure of the anterior sensory nervous system of the small nematode C . elegans h a s been determined by reconstruction from serial section electronmicrographs. There are 58 neurons in the tip of the head. Fiftytwo of these are arranged in sensilla. These include six inner labial sen ...
DOC - ADAM Interactive Anatomy
... the ___________________(a gap between the neurons) to the receiving neuron. Advantages of the chemical synapse: 1. The signal can be either ____________ or ____________. 2. The signal can be ______________ as it passes from one neuron to the next. ...
... the ___________________(a gap between the neurons) to the receiving neuron. Advantages of the chemical synapse: 1. The signal can be either ____________ or ____________. 2. The signal can be ______________ as it passes from one neuron to the next. ...
Chapter 48
... • The membrane potential of a cell can be measured APPLICATION Electrophysiologists use intracellular recording to measure the membrane potential of neurons and other cells. TECHNIQUE A microelectrode is made from a glass capillary tube filled with an electrically conductive salt solution. One end ...
... • The membrane potential of a cell can be measured APPLICATION Electrophysiologists use intracellular recording to measure the membrane potential of neurons and other cells. TECHNIQUE A microelectrode is made from a glass capillary tube filled with an electrically conductive salt solution. One end ...
The Living Network Lab focuses its group is
... Our system is based on the MEA (Microelectrode Array) technology. A MEA is a glass Petri dish where small electrodes are inserted. The cultured neural cells adhere directly on these electrodes. Each electrode is connected by means of an isolated track to a pad suitable for the external connection. M ...
... Our system is based on the MEA (Microelectrode Array) technology. A MEA is a glass Petri dish where small electrodes are inserted. The cultured neural cells adhere directly on these electrodes. Each electrode is connected by means of an isolated track to a pad suitable for the external connection. M ...
Interactions between Segmental Homologs and between
... of terminal fields. This process is not well understood, but experimental evidence in several systems suggests that, besides interactions with the target, interactions among axonal terminals of different cells and between different branches of the same neuron are important. Competitive interactions ...
... of terminal fields. This process is not well understood, but experimental evidence in several systems suggests that, besides interactions with the target, interactions among axonal terminals of different cells and between different branches of the same neuron are important. Competitive interactions ...
An Intrinsic Oscillation in Interneurons of the Rat Lateral Geniculate
... Department of Anatomy and 2Department of Neurology, Neuroscience Training Program, Wm. S. Middleton VA Hospital, University of Wisconsin, Madison, Wisconsin 53706 Zhu, J. Julius, William W. Lytton, Jin-Tang Xue, and Daniel J. Uhlrich. Intrinsic oscillation in interneurons of the rat lateral genicula ...
... Department of Anatomy and 2Department of Neurology, Neuroscience Training Program, Wm. S. Middleton VA Hospital, University of Wisconsin, Madison, Wisconsin 53706 Zhu, J. Julius, William W. Lytton, Jin-Tang Xue, and Daniel J. Uhlrich. Intrinsic oscillation in interneurons of the rat lateral genicula ...
Speech Science XI
... of patterns (forms) which are important for our (personal) life. I.e., forms which have a meaning for us (= Signs). • Auditory Perception is the part of our pattern recognition mechanism dealing with acoustic input. What other perception mechanisms do we have? • Speech perception is the aspect of ou ...
... of patterns (forms) which are important for our (personal) life. I.e., forms which have a meaning for us (= Signs). • Auditory Perception is the part of our pattern recognition mechanism dealing with acoustic input. What other perception mechanisms do we have? • Speech perception is the aspect of ou ...
Lesson 3 Brain Communication
... • BOTULISM: a food poisoning that affects the nervous system caused by a bacteria. ...
... • BOTULISM: a food poisoning that affects the nervous system caused by a bacteria. ...
Nervous System I
... • Resting or Membrane Potential: a small difference in voltage across the cell membrane; the cell is normally negatively charged. – This allows the neuron to be ready to respond more quickly than it could if it were electrically neutral. – Think about a car battery. It retains a charge so that the c ...
... • Resting or Membrane Potential: a small difference in voltage across the cell membrane; the cell is normally negatively charged. – This allows the neuron to be ready to respond more quickly than it could if it were electrically neutral. – Think about a car battery. It retains a charge so that the c ...
12-4 Membrane Potential
... the plasma membrane is much more permeable to potassium than to sodium. As a result, there are more positive charges outside the plasma membrane. Negatively charged protein molecules within the cytosol cannot cross the plasma membrane, so there are more negative charges on the cytosol side of the pl ...
... the plasma membrane is much more permeable to potassium than to sodium. As a result, there are more positive charges outside the plasma membrane. Negatively charged protein molecules within the cytosol cannot cross the plasma membrane, so there are more negative charges on the cytosol side of the pl ...
motor unit
... Total tension developed by a muscle is due to both spatial and temporal summation of tension The minimum tension is produced by a single twitch in the smallest motor unit (with least number of muscle fibers) The maximum tension is produced by tetanic contractions in all motor units of a muscle ...
... Total tension developed by a muscle is due to both spatial and temporal summation of tension The minimum tension is produced by a single twitch in the smallest motor unit (with least number of muscle fibers) The maximum tension is produced by tetanic contractions in all motor units of a muscle ...
Nervous System
... » More sodium outside than inside » More potassium inside than outside » Presence of nondiffusable ions inside • Resting potential is maintained by – Unequal permeability of membrane » More permeable to potassium than sodium at rest » Membrane tends to “leak” positive charges – Sodium-potassium pump ...
... » More sodium outside than inside » More potassium inside than outside » Presence of nondiffusable ions inside • Resting potential is maintained by – Unequal permeability of membrane » More permeable to potassium than sodium at rest » Membrane tends to “leak” positive charges – Sodium-potassium pump ...
Chapter 2: Communication Within the Nervous System
... adventure of biological psychology. There are other good texts out there, but they read like they were written for serious junior and senior psychology majors who appreciate the importance of biological psychology in its own right. This book is for them, too, but I wrote it so any student who is int ...
... adventure of biological psychology. There are other good texts out there, but they read like they were written for serious junior and senior psychology majors who appreciate the importance of biological psychology in its own right. This book is for them, too, but I wrote it so any student who is int ...
Tom`s JSNC2000 paper
... sufficient to produce changes in activity. Typically, studies producing effects such as LTP and LTD use prolonged pulse trains of stimulation (e.g., Jimbo et al. 1999) rather than a single pulse. In fact, the current arrangement essentially produces a situation analogous to an animal in a dark room ...
... sufficient to produce changes in activity. Typically, studies producing effects such as LTP and LTD use prolonged pulse trains of stimulation (e.g., Jimbo et al. 1999) rather than a single pulse. In fact, the current arrangement essentially produces a situation analogous to an animal in a dark room ...
Chapter 11
... Na+ more concentrated outside & K+ more inside Inside more negative than outside Resting membrane potential -70mv ...
... Na+ more concentrated outside & K+ more inside Inside more negative than outside Resting membrane potential -70mv ...
Symmetric versus asymmetric cell division during neurogenesis in
... important to determine whether the increase in the thickness of the subventricular zone during the evolution of mammalian brains reflects interspecies differences in the extent of a possible self-amplification of basal and subventricular-zone progenitors by symmetric proliferative divisions, rather ...
... important to determine whether the increase in the thickness of the subventricular zone during the evolution of mammalian brains reflects interspecies differences in the extent of a possible self-amplification of basal and subventricular-zone progenitors by symmetric proliferative divisions, rather ...
Extended Liquid Computing in Networks of Spiking Neurons
... With the conservation of the electric charge, we have: C dV = −F + Is + I dt C is the cell capacitance, F the membrane current, Is the sum of external synaptic currents entering the cell. I describes any external applied current. The membrane current F arises mainly though the conduction of sodium a ...
... With the conservation of the electric charge, we have: C dV = −F + Is + I dt C is the cell capacitance, F the membrane current, Is the sum of external synaptic currents entering the cell. I describes any external applied current. The membrane current F arises mainly though the conduction of sodium a ...
Electrophysiology
Electrophysiology (from Greek ἥλεκτρον, ēlektron, ""amber"" [see the etymology of ""electron""]; φύσις, physis, ""nature, origin""; and -λογία, -logia) is the study of the electrical properties of biological cells and tissues. It involves measurements of voltage change or electric current on a wide variety of scales from single ion channel proteins to whole organs like the heart. In neuroscience, it includes measurements of the electrical activity of neurons, and particularly action potential activity. Recordings of large-scale electric signals from the nervous system such as electroencephalography, may also be referred to as electrophysiological recordings.