PHYSIOLOGICAL PSYCHOLOGY B.Sc. Counselling Psychology
... In the same way that having two eyes allows for greater visual abilities through stereoscopic vision, so having two ears affords a greater skill in hearing. The use of two ears is called binaural detection. Without two ears, our ability to locate a sound source is diminished, although, as we shall s ...
... In the same way that having two eyes allows for greater visual abilities through stereoscopic vision, so having two ears affords a greater skill in hearing. The use of two ears is called binaural detection. Without two ears, our ability to locate a sound source is diminished, although, as we shall s ...
Ch12.Nervous.Tissue
... – Impulses travel to axon terminals – Chromatophilic bodies are absent – No protein synthesis in axon ...
... – Impulses travel to axon terminals – Chromatophilic bodies are absent – No protein synthesis in axon ...
Document
... primary motor cortex • When stimulated, muscles on the opposite side of the body contract. • Has complete representation of body’s musculature. • Greater space for fine motor control than for less precise motor control • Very focal stimulation --> organized movement (excitation and inhibition) Wed. ...
... primary motor cortex • When stimulated, muscles on the opposite side of the body contract. • Has complete representation of body’s musculature. • Greater space for fine motor control than for less precise motor control • Very focal stimulation --> organized movement (excitation and inhibition) Wed. ...
Fatigue
... Biochemistry, Secretion and Transport of Hormones The Actions of Hormones on Target Cells The Hypothalamic-Pituitary Axis Response to Stress ...
... Biochemistry, Secretion and Transport of Hormones The Actions of Hormones on Target Cells The Hypothalamic-Pituitary Axis Response to Stress ...
Neuro-ophthalmology
... Transient monocular visual loss or dimming May last from 2-3 minutes to 30 minutes or more Due to decrease blood flow to the eye Causes: • Carotid atheroma • Cardiac valvular disease • Atrial myxoma • Retinal migraine • Giant cell arteritis • Hyperviscousity syndromes ...
... Transient monocular visual loss or dimming May last from 2-3 minutes to 30 minutes or more Due to decrease blood flow to the eye Causes: • Carotid atheroma • Cardiac valvular disease • Atrial myxoma • Retinal migraine • Giant cell arteritis • Hyperviscousity syndromes ...
Spinal Cord and Spinal Nerves
... 15. A collection of axons in the CNS is referred to as a _____________. a. Nucleus b. Ganglion c. Nerve d. Tract e. None of the above 16. Cutting all the right ventral rootlets in the cervical and thoracic spinal cord would cause a decrease in the ability to: a. Move the right arm b. Move the left ...
... 15. A collection of axons in the CNS is referred to as a _____________. a. Nucleus b. Ganglion c. Nerve d. Tract e. None of the above 16. Cutting all the right ventral rootlets in the cervical and thoracic spinal cord would cause a decrease in the ability to: a. Move the right arm b. Move the left ...
The Special Senses
... • Olfactory neural chemoreceptors - have specialized cilia which detect the presence of specific chemicals within the air we breath • The neurons connected to the olfactory bulb when stimulated sends a message to the olfactory center of the brain where the smell is interpreted ...
... • Olfactory neural chemoreceptors - have specialized cilia which detect the presence of specific chemicals within the air we breath • The neurons connected to the olfactory bulb when stimulated sends a message to the olfactory center of the brain where the smell is interpreted ...
OTTO LOEWI
... The legend tells that he had the idea of the experiment in a dream and that he ran to the lab in the middle of the night. The experiment was very simple and became a prototype for all investigations of chemical factors in the nervous system. He cut out two hearts from frogs and perfused them with a ...
... The legend tells that he had the idea of the experiment in a dream and that he ran to the lab in the middle of the night. The experiment was very simple and became a prototype for all investigations of chemical factors in the nervous system. He cut out two hearts from frogs and perfused them with a ...
Lecture-20-2013-Bi
... Proust, Remembrance of Things Past “as soon as I had recognized the taste of the piece of madeleine soaked in her decoction of lime-blossom which my aunt used to give me (although I did not yet know and must long postpone the discovery of why this memory made me so happy) immediately the old grey h ...
... Proust, Remembrance of Things Past “as soon as I had recognized the taste of the piece of madeleine soaked in her decoction of lime-blossom which my aunt used to give me (although I did not yet know and must long postpone the discovery of why this memory made me so happy) immediately the old grey h ...
doc neuro chap 13, 14, 15, 16, 18
... Sometimes psychological processes can be understood by physiological mechanisms. The relationship is particularly true of complex phenomena. Findings indicate that the ability to recognize a spoken word and to spell it call on related brain mechanisms. Reading comprehension can take 2 routes: one th ...
... Sometimes psychological processes can be understood by physiological mechanisms. The relationship is particularly true of complex phenomena. Findings indicate that the ability to recognize a spoken word and to spell it call on related brain mechanisms. Reading comprehension can take 2 routes: one th ...
Chapter 49 and 50 Presentations-Sensory and Motor Mechanisms
... potential which synapses with a series of other neurons along the way—sometimes up to 100,000! ...
... potential which synapses with a series of other neurons along the way—sometimes up to 100,000! ...
Premier exercice
... to the benzodiazepines family are used in treating anxiety. In order to study the action of these molecules on the muscular activity, we record by means of a microelectrode the electric activity of the postsynaptic motor neuron following the injection of GABA and/or benzodiazepine into the synaptic ...
... to the benzodiazepines family are used in treating anxiety. In order to study the action of these molecules on the muscular activity, we record by means of a microelectrode the electric activity of the postsynaptic motor neuron following the injection of GABA and/or benzodiazepine into the synaptic ...
Stretch reflexes. (Final).
... Signals sent to a whole muscle (like the biceps) causing it to contract, travel from the spinal cord through alpha motor neurons. When this occurs, only extrafusal muscle fibers would contract. Meanwhile, the intrafusal muscle fibers within the muscle spindles would go slack and information from the ...
... Signals sent to a whole muscle (like the biceps) causing it to contract, travel from the spinal cord through alpha motor neurons. When this occurs, only extrafusal muscle fibers would contract. Meanwhile, the intrafusal muscle fibers within the muscle spindles would go slack and information from the ...
Espasticidad,!!nuevos!conceptos!fisiológicos!y!patofisiológicos
... In) the) nervous) system,) reflexes) are) transmitted) via) signals) through) action) potentials,% which) are) changes) in) membrane) potential) at) very) high) speeds) that) are) spread) across) the) mem0 brane)of)the)nerve)fiber.)These)begin)with)an)abrupt)change)of) the) resting) potential) from) ...
... In) the) nervous) system,) reflexes) are) transmitted) via) signals) through) action) potentials,% which) are) changes) in) membrane) potential) at) very) high) speeds) that) are) spread) across) the) mem0 brane)of)the)nerve)fiber.)These)begin)with)an)abrupt)change)of) the) resting) potential) from) ...
Artificial Neural Networks
... and Cajal who received a Nobel Prize in 1906. You can see roundish neurons with their output axons. Some leave the area (those at the bottom which form the ‘optic nerve’) and other axons input into other neurons via their input connections called dendrites. Neuron e receives its input from four othe ...
... and Cajal who received a Nobel Prize in 1906. You can see roundish neurons with their output axons. Some leave the area (those at the bottom which form the ‘optic nerve’) and other axons input into other neurons via their input connections called dendrites. Neuron e receives its input from four othe ...
membrane potential
... postsynaptic cell A single neurotransmitter may have more than a dozen different receptors Acetylcholine is a common neurotransmitter in both invertebrates and vertebrates ...
... postsynaptic cell A single neurotransmitter may have more than a dozen different receptors Acetylcholine is a common neurotransmitter in both invertebrates and vertebrates ...
Thoracic Wall
... intercostal space Related to endothoracic fascia. Blood vessels,nerves pass between intermediate and deepest layer. ...
... intercostal space Related to endothoracic fascia. Blood vessels,nerves pass between intermediate and deepest layer. ...
Nerve
... 2 The proximal portion of each severed axon seals off and swells. The distal portion of axon and myelin sheath disintegrate; the neurolemma survives. ...
... 2 The proximal portion of each severed axon seals off and swells. The distal portion of axon and myelin sheath disintegrate; the neurolemma survives. ...
Neuromuscular junction
A neuromuscular junction (sometimes called a myoneural junction) is a junction between nerve and muscle; it is a chemical synapse formed by the contact between the presynaptic terminal of a motor neuron and the postsynaptic membrane of a muscle fiber. It is at the neuromuscular junction that a motor neuron is able to transmit a signal to the muscle fiber, causing muscle contraction.Muscles require innervation to function—and even just to maintain muscle tone, avoiding atrophy. Synaptic transmission at the neuromuscular junction begins when an action potential reaches the presynaptic terminal of a motor neuron, which activates voltage-dependent calcium channels to allow calcium ions to enter the neuron. Calcium ions bind to sensor proteins (synaptotagmin) on synaptic vesicles, triggering vesicle fusion with the cell membrane and subsequent neurotransmitter release from the motor neuron into the synaptic cleft. In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma. nAChRs are ionotropic receptors, meaning they serve as ligand-gated ion channels. The binding of ACh to the receptor can depolarize the muscle fiber, causing a cascade that eventually results in muscle contraction.Neuromuscular junction diseases can be of genetic and autoimmune origin. Genetic disorders, such as Duchenne muscular dystrophy, can arise from mutated structural proteins that comprise the neuromuscular junction, whereas autoimmune diseases, such as myasthenia gravis, occur when antibodies are produced against nicotinic acetylcholine receptors on the sarcolemma.