PsychScich04
... • Subtractive color mixing: a process of color mixing that occurs within the stimulus itself; a physical, not psychological, process – Mixing paints is one form of subtractive color mixing because the colors are determined by pigments. – Wavelengths that a pigment does not absorb are reflected and e ...
... • Subtractive color mixing: a process of color mixing that occurs within the stimulus itself; a physical, not psychological, process – Mixing paints is one form of subtractive color mixing because the colors are determined by pigments. – Wavelengths that a pigment does not absorb are reflected and e ...
Touch is complicated
... reside in deeper structures such as the muscles, tendons, and joints: Important to the motor system in guiding movement through the environment ...
... reside in deeper structures such as the muscles, tendons, and joints: Important to the motor system in guiding movement through the environment ...
Chapter 16 Sense Organs
... Vision and Light • Vision (sight) is perception of light emitted or reflected from objects in the environment • Visible light is electromagnetic radiation with wavelengths from 400 to 750 nm • Light must cause a photochemical reaction in order to produce a nerve signal our brain can notice – radiati ...
... Vision and Light • Vision (sight) is perception of light emitted or reflected from objects in the environment • Visible light is electromagnetic radiation with wavelengths from 400 to 750 nm • Light must cause a photochemical reaction in order to produce a nerve signal our brain can notice – radiati ...
Sensory System
... o Stimulus0Produced Analgesia can occur from electrical stimulation of the periaqueductal gray. Again, this analgesia has its effect by inhibiting pain transmission in Dorsal Horn. OPIOIDS: o Inject very small amount of Morphine into one of two CNS regions to cause profound Analgesia: o Opioid Rec ...
... o Stimulus0Produced Analgesia can occur from electrical stimulation of the periaqueductal gray. Again, this analgesia has its effect by inhibiting pain transmission in Dorsal Horn. OPIOIDS: o Inject very small amount of Morphine into one of two CNS regions to cause profound Analgesia: o Opioid Rec ...
Immunohistochemical Study of Spinal Motor Neurons Following
... Axotomy causes disturbance in intra-axonal and retrograde transportation of nerve growth factors from target organ to somata of motor neurons. Absence of neurotrophic factor induces some degenerative changes and perhaps neuronal death of motor neurons (33). Ma and et al. in 2003 reported that 16 wee ...
... Axotomy causes disturbance in intra-axonal and retrograde transportation of nerve growth factors from target organ to somata of motor neurons. Absence of neurotrophic factor induces some degenerative changes and perhaps neuronal death of motor neurons (33). Ma and et al. in 2003 reported that 16 wee ...
primary motor cortex - UPM EduTrain Interactive Learning
... sensorimotor system have patterns of activity programmed into them and complex movements are produced by activating these programs. Cerebellum and basal ganglia then serve to coordinate the various programs. ...
... sensorimotor system have patterns of activity programmed into them and complex movements are produced by activating these programs. Cerebellum and basal ganglia then serve to coordinate the various programs. ...
Spinal cord 1
... that arise from several adjacent spinal roots. Nevertheless, lesions of a single spinal root, in many cases, can cause weakness and atrophy of a muscle ...
... that arise from several adjacent spinal roots. Nevertheless, lesions of a single spinal root, in many cases, can cause weakness and atrophy of a muscle ...
21-Spinal Cord Tracts I
... Sensation-stimulated receptor passes information to the CNS via afferent (sensory) fibers Most sensory information is processed in the spinal cord , thalamus, or brain stem. Only 1% reaches the cerebral cortex and our conscious awareness Processing in the spinal cord can produce a rapid motor respon ...
... Sensation-stimulated receptor passes information to the CNS via afferent (sensory) fibers Most sensory information is processed in the spinal cord , thalamus, or brain stem. Only 1% reaches the cerebral cortex and our conscious awareness Processing in the spinal cord can produce a rapid motor respon ...
Nervous System
... • Extensions of the soma form nerve such as dendrites which conduct nerve impulses toward the soma, and axon which conducts nerve impulses away from the soma (to another neuron, or to an effect or organ). • The number of dendrites ranges from 1 ( in unipolar and bipolar neurons) to thousands ( in mu ...
... • Extensions of the soma form nerve such as dendrites which conduct nerve impulses toward the soma, and axon which conducts nerve impulses away from the soma (to another neuron, or to an effect or organ). • The number of dendrites ranges from 1 ( in unipolar and bipolar neurons) to thousands ( in mu ...
C8003 Psychobiology sample paper 2016-17
... Emotions can never be 'experienced' until the body has time to react The parasympathetic nervous system is responsible for the feeling of ...
... Emotions can never be 'experienced' until the body has time to react The parasympathetic nervous system is responsible for the feeling of ...
Current Opinion in Neurobiology - Sensory systems
... his field of neuroethology, but it applies equally well to sensory physiology. (His other three questions, also about mechanism, concerned ontogeny, phylogeny and adaptation, which also apply well to issues reviewed here, like coding, learning, and choice.) The measurements and the associated theore ...
... his field of neuroethology, but it applies equally well to sensory physiology. (His other three questions, also about mechanism, concerned ontogeny, phylogeny and adaptation, which also apply well to issues reviewed here, like coding, learning, and choice.) The measurements and the associated theore ...
Ch 8 (Student MCQs etc)
... two channels is also seen veridically (that is, true to its actual orientation) by taking the centre of gravity of the activity pattern; this is how we see, for example, a small degree of tilt away from vertical (panel C, figure 8.3). With stimuli tilted 20 degrees clockwise, the active channels are ...
... two channels is also seen veridically (that is, true to its actual orientation) by taking the centre of gravity of the activity pattern; this is how we see, for example, a small degree of tilt away from vertical (panel C, figure 8.3). With stimuli tilted 20 degrees clockwise, the active channels are ...
Hearing in a diurnal, mute butterfly, Morpho peleides
... Responses to sounds ranging between 500 Hz and 40 kHz were tested using trapezoidal sound pulses (30 ms duration, 5 ms rise/fall, linear ramp) that were shaped using a PC with Tucker Davis software (RPvdsEx, v. 5.4; Alachua, FL) and synthesized by a Tucker Davis Technologies (TDT) digital signal pro ...
... Responses to sounds ranging between 500 Hz and 40 kHz were tested using trapezoidal sound pulses (30 ms duration, 5 ms rise/fall, linear ramp) that were shaped using a PC with Tucker Davis software (RPvdsEx, v. 5.4; Alachua, FL) and synthesized by a Tucker Davis Technologies (TDT) digital signal pro ...
Nervous Systems: Cells and Functions
... • Information is transmitted from sensory cells to the CNS and from the CNS to effectors via neurons, which extend or reside outside of the brain and spinal cord. • In the CNS, sensory information is assimilated, responses formulated, and motor responses sent ...
... • Information is transmitted from sensory cells to the CNS and from the CNS to effectors via neurons, which extend or reside outside of the brain and spinal cord. • In the CNS, sensory information is assimilated, responses formulated, and motor responses sent ...
Movement
... (12) In the living animal, an external stretching force, such as gravity or an antagonistic muscle, pulls the muscle back to its original length. ...
... (12) In the living animal, an external stretching force, such as gravity or an antagonistic muscle, pulls the muscle back to its original length. ...
Post-Operative Time Effects after Sciatic Nerve Crush on the
... might produce chromatolysis and cell death. In this research, we investigated the post-operative time effects following sciatic nerve crush on the numerical density of alpha motoneurons. The present results, are based on using method which provides absolute estimates of cell number rather than ratio ...
... might produce chromatolysis and cell death. In this research, we investigated the post-operative time effects following sciatic nerve crush on the numerical density of alpha motoneurons. The present results, are based on using method which provides absolute estimates of cell number rather than ratio ...
THE BASAL GANGLIA - Selam Higher Clinic
... Gives enhanced dopaminergic state leading to chorea ...
... Gives enhanced dopaminergic state leading to chorea ...
Brain calculus: neural integration and persistent activity
... intracellular injection of current. This supports the network hypothesis, because if the step changes were generated through mechanisms intrinsic to the cell recorded, such as through the activation of a persistent depolarizing current, then hyperpolarization (or depolarization) of the cell with cur ...
... intracellular injection of current. This supports the network hypothesis, because if the step changes were generated through mechanisms intrinsic to the cell recorded, such as through the activation of a persistent depolarizing current, then hyperpolarization (or depolarization) of the cell with cur ...
an appraisal of the mechanism of action of
... reduces stress by modulating the nerve progression/stimulation5. When nerve endings of autonomic nervous system are stimulated, they produce chemical substances like Acetylcholine which exists in the tissues in an inactive form and is activated by a nerve impulse vibration produced due to constant p ...
... reduces stress by modulating the nerve progression/stimulation5. When nerve endings of autonomic nervous system are stimulated, they produce chemical substances like Acetylcholine which exists in the tissues in an inactive form and is activated by a nerve impulse vibration produced due to constant p ...
Chapter 12: The Central Nervous System
... Since the hypothalamus is clearinghouse for emotional response and autonomic nervous system, it is not surprising that some people under unrelenting emotional stress fall prey to emotional-induced illness such as increased blood pressure, irritable bowel syndrome, heartburn Reticular formation - gra ...
... Since the hypothalamus is clearinghouse for emotional response and autonomic nervous system, it is not surprising that some people under unrelenting emotional stress fall prey to emotional-induced illness such as increased blood pressure, irritable bowel syndrome, heartburn Reticular formation - gra ...
PSYCHOLOGY (8th Edition) David Myers
... assumption that shrinking objects are retreating and enlarging objects are approaching. Large objects are also perceived to be moving more slowly that smaller objects. The brain will also perceive continuous movement in a series of slightly varying images. The illusion of movement is also created us ...
... assumption that shrinking objects are retreating and enlarging objects are approaching. Large objects are also perceived to be moving more slowly that smaller objects. The brain will also perceive continuous movement in a series of slightly varying images. The illusion of movement is also created us ...
Depth perception - Bremerton School District
... assumption that shrinking objects are retreating and enlarging objects are approaching. Large objects are also perceived to be moving more slowly that smaller objects. The brain will also perceive continuous movement in a series of slightly varying images. The illusion of movement is also created us ...
... assumption that shrinking objects are retreating and enlarging objects are approaching. Large objects are also perceived to be moving more slowly that smaller objects. The brain will also perceive continuous movement in a series of slightly varying images. The illusion of movement is also created us ...
Chapter 2
... which conduct signals toward and away from the cell body, respectively). In the central nervous system (CNS), neuronal cell bodies and dendrites occur in gray matter. White matter consists largely of axons, most of which have myelin sheaths that serve to increase the velocity of conduction. A neuron ...
... which conduct signals toward and away from the cell body, respectively). In the central nervous system (CNS), neuronal cell bodies and dendrites occur in gray matter. White matter consists largely of axons, most of which have myelin sheaths that serve to increase the velocity of conduction. A neuron ...
Rheobase
Rheobase is a measure of membrane excitability. In neuroscience, rheobase is the minimal current amplitude of infinite duration (in a practical sense, about 300 milliseconds) that results in the depolarization threshold of the cell membranes being reached, such as an action potential or the contraction of a muscle. In Greek, the root ""rhe"" translates to current or flow, and ""basi"" means bottom or foundation: thus the rheobase is the minimum current that will produce an action potential or muscle contraction.Rheobase can be best understood in the context of the strength-duration relationship (Fig. 1). The ease with which a membrane can be stimulated depends on two variables: the strength of the stimulus, and the duration for which the stimulus is applied. These variables are inversely related: as the strength of the applied current increases, the time required to stimulate the membrane decreases (and vice versa) to maintain a constant effect. Mathematically, rheobase is equivalent to half the current that needs to be applied for the duration of chronaxie, which is a strength-duration time constant that corresponds to the duration of time that elicits a response when the nerve is stimulated at twice rheobasic strength.The strength-duration curve was first discovered by G. Weiss in 1901, but it was not until 1909 that Louis Lapicque coined the term ""rheobase"". Many studies are being conducted in relation to rheobase values and the dynamic changes throughout maturation and between different nerve fibers. In the past strength-duration curves and rheobase determinations were used to assess nerve injury; today, they play a role in clinical identification of many neurological pathologies, including as Diabetic neuropathy, CIDP, Machado-Joseph Disease, and ALS.