When the brain integrates signals from different sensory systems, all these signals receive equal weight in determining the actions & forming memories. True False
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When the brain integrates signals from different sensory systems, all these signals receive equal weight in determining the actions & forming memories.
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- Watch this video (http://openstaxcollege.org/l/nervsystem1) to learn more about the nervous system. As described in this video, the nervous system has a way to deal with threats and stress that is separate from the conscious control of the somatic nervous system. The system comes from a time when threats were about survival, but in the modern age, these responses become part of stress and anxiety. This video describes how the autonomic system is only part of the response to threats, or stressors. What other organ system gets involved, and what part of the brain coordinates the two systems for the entire response, including epinephrine (adrenaline) and cortisol?Watch this video (http://openstaxcollege.org/l/2point) to see a quick demonstration of two-point discrimination. Touching a specialized caliper to the surface of the skin will measure the distance between two points that are perceived as distinct stimuli versus a single stimulus. The patient keeps their eyes closed while the examiner switches between using both points of the caliper or just one. The patient then must indicate whether one or two stimuli are in contact with the skin. Why is the distance between the caliper points closer on the fingertips as opposed to the palm of the hand? And what do you think the distance would be on the arm, or the shoulder?The part of the brain that is responsible for coordination during movement is the ______. a. limbic system b. thalamus c. cerebellum d. parietal lobe
- Visit this site (http://openstaxcollege.org/l/neurolab) to see a virtual neurophysiology lab, and to observe electrophysiological processes in the nervous system, where scientists directly measure the electrical signals produced by neurons. Often, the action potentials occur so rapidly that watching a screen to see them occur is not helpful. A speaker is powered by the signals recorded from a neuron and it pops each time the neuron fires an action potential. These action potentials are firing so fast that it sounds like static on the radio. Electrophysiologists can recognize the patterns within that static to understand what is happening. Why is the leech model used for measuring the electrical activity of neurons instead of using humans?In the propagation of a nerve impulse: a. the refractory period begins as the K+ channel opens, allowing K+ ions to flow outward along their concentrationgradient. b. Na+ ions flow out of the axon with their concentration gradient. c. positive charges lower the membrane potential to its lowestaction potential. d. gated K+ channels open at the same time as the activationgate of Na+ channels closes. e. the depolarizing stimulus lowers the membrane potential toopen the Na+ gates.In the ___, neurons are arranged like maps that correspond to different parts of the body surface. a. retina b. somatosensory cortex c. basilar membrane d. occipital lobe
- Watch this video (http://openstaxcollege.org/l/basalnuclei1) to learn about the basal nuclei (also known as the basal ganglia), which have two pathways that process information within the cerebrum. As shown in this video, the direct pathway is the shorter pathway through the system that results in increased activity in the cerebral cortex and increased motor activity. The direct pathway is described as resulting in disinhibition of the thalamus. What does disinhibition mean? What are the two neurons doing individually to cause this?A reflex action :-a- is a fast brief response to a sensory stimulusb- is involved in regulation of voluntary movementsc- includes at least three sequential sets of neurons in its pathwayd- is always initiated whenever its specific receptors are effectively stimulated by a specific stimulusAlzheimer's one of the diseases that could be diagnosis by EOG ЕCG EMG EEG Receives and interpretation electrical messages from other neurons The Axon Cell Body The dendrites Axon Terminal
- true or false bb.Neurons can communicate using electric impulses in the axon and neurotransmitters secreted at the synapses.cc. Synapse formation is important for memory.dd. Alzheimer’s disease is the most common cause of dementia. ee. Dementia can be cured by calorie restriction and exercise.ff. In general, larger animals take longer sleep.gg.Circadian rhythm is basically a 24-hour internal clock that is running in the background of your body and cycles between sleepiness and alertness at regular intervals.A Moving to another question will save this response. Question 6 Which of the following is true about the differences between the Cowan model of working memory and the Baddeley model of working memory? O The Cowan model has a single "Executive" component; the Baddeley model has several “Executive" components. O The Baddeley model distinguishes between sensory modalities (e.g., sound, vision); the Cowan model does not. O The Cowan model views short-term memory and long-term memory as different constructs; the Baddeley model does not. O The Cowan model distinguishes between sensory modalities (e.g., sound, vision); the Baddeley model does not. O The Cowan model views short-term memory and long-term memory as different constructs; the Baddeley model does not. A Moving to another question will save this response. MacBook Air F3 escSpecifically neuroadaptation in drug users consist in the molecular basis in which the receptor population for an endogenous substance is reduced the binding rate of the abused substance increases drastically reprogramming of the binding affinity of the drug of choice simply an excuse to continue using a particular substance
