Jumpin` the Gap - Teach Genetics (Utah)
... separates it from the outside world. Inside the cell is a concentrated mixture of thousands of different molecules which form a variety of specialized structures that carry out such cell functions as energy production, transport of molecules, waste disposal, synthesis of new molecules, and the stora ...
... separates it from the outside world. Inside the cell is a concentrated mixture of thousands of different molecules which form a variety of specialized structures that carry out such cell functions as energy production, transport of molecules, waste disposal, synthesis of new molecules, and the stora ...
AG-VT - 02.424 06.1 Skeleton and Vital Organs
... homeostasis refers to the body's ability to physiologically regulate its inner environment to ensure its stability in response to fluctuations in the outside environment and the weather. The liver, the kidneys, and the brain (hypothalamus, the autonomic nervous system and the endocrine system[1]) he ...
... homeostasis refers to the body's ability to physiologically regulate its inner environment to ensure its stability in response to fluctuations in the outside environment and the weather. The liver, the kidneys, and the brain (hypothalamus, the autonomic nervous system and the endocrine system[1]) he ...
test prep
... Distinguish between absolute and difference thresholds, and discuss whether we can sense stimuli below our absolute threshold and be influenced by them. Describe sensory adaptation, and explain how we benefit from being unaware of unchanging stimuli. Define transduction, and specify the form of ener ...
... Distinguish between absolute and difference thresholds, and discuss whether we can sense stimuli below our absolute threshold and be influenced by them. Describe sensory adaptation, and explain how we benefit from being unaware of unchanging stimuli. Define transduction, and specify the form of ener ...
File - JFS Psychology
... neurotransmitters into the synaptic cleft when stimulated by nerve impulses (action potentials) arriving at the presynaptic terminal, combination of neurotransmitters with postsynaptic receptors; postsynaptic effects either excitatory (depolarisation) or inhibitory (hyperpolarisation). Diagrams can ...
... neurotransmitters into the synaptic cleft when stimulated by nerve impulses (action potentials) arriving at the presynaptic terminal, combination of neurotransmitters with postsynaptic receptors; postsynaptic effects either excitatory (depolarisation) or inhibitory (hyperpolarisation). Diagrams can ...
Kaan Yücel M.D., Ph.D. http://fhs122.org
... sensation. These are simple sensations. The four: 1) Touch 2) Pressure 3) Temperature 4) Pain. In protopathic sensations, you can define the degree of the sensation roughly. The other one is the epicritic sensation. The epicritic sensation is a discriminative sensation. You can define small differen ...
... sensation. These are simple sensations. The four: 1) Touch 2) Pressure 3) Temperature 4) Pain. In protopathic sensations, you can define the degree of the sensation roughly. The other one is the epicritic sensation. The epicritic sensation is a discriminative sensation. You can define small differen ...
Study Guide 3
... 23. Describe two ways in which processing in the retina might affect our visual perception. 24, Which cells in the retina produce action potentials? Which do not? 25. What is accommodation? How does it occur? 26. What is light-adaptation? What causes it, and why do we need it? 27. What is dark-adapt ...
... 23. Describe two ways in which processing in the retina might affect our visual perception. 24, Which cells in the retina produce action potentials? Which do not? 25. What is accommodation? How does it occur? 26. What is light-adaptation? What causes it, and why do we need it? 27. What is dark-adapt ...
Chapter 15
... Motor nervous system that controls glands, cardiac & smooth muscle Regulates unconscious processes that maintain homeostasis blood pressure, body temperature, respiratory airflow Involved with visceral reflexes ANS carries out its actions without our intent (automatically) biofeedback techniques ...
... Motor nervous system that controls glands, cardiac & smooth muscle Regulates unconscious processes that maintain homeostasis blood pressure, body temperature, respiratory airflow Involved with visceral reflexes ANS carries out its actions without our intent (automatically) biofeedback techniques ...
An introduction to hearing
... • Oval window causes upper chamber to vibrate • Causes middle and lower chambers to vibrate • Round window acts as a pressure outlet ...
... • Oval window causes upper chamber to vibrate • Causes middle and lower chambers to vibrate • Round window acts as a pressure outlet ...
BIOL 218 F 2012 MTX 4 Q NS 121121
... Which of the following is the most common type of neurons in the central nervous system, and is exemplified by all the motor neurons that control skeletal muscle? A. anaxonic neurons B. multipolar neurons C. pseudounipolar neurons D. bipolar neurons ...
... Which of the following is the most common type of neurons in the central nervous system, and is exemplified by all the motor neurons that control skeletal muscle? A. anaxonic neurons B. multipolar neurons C. pseudounipolar neurons D. bipolar neurons ...
Cliff - USD Biology
... Evoke ultrafast firing frequencies for fast spiking neurons Help match the synchrony and patterning of the physiological neural code ...
... Evoke ultrafast firing frequencies for fast spiking neurons Help match the synchrony and patterning of the physiological neural code ...
Group Redundancy Measures Reveal Redundancy Reduction in the
... representing more and more complex aspects of sensory inputs. The changes in representations of stimuli along the sensory pathway reflect the information processing performed by the system. Several computational principles that govern these changes were suggested, such as information maximization an ...
... representing more and more complex aspects of sensory inputs. The changes in representations of stimuli along the sensory pathway reflect the information processing performed by the system. Several computational principles that govern these changes were suggested, such as information maximization an ...
They Come From the Cortex - American Association of Sleep
... the thalamus. The cerebral cortex and the thalamus often work together in generating brain rhythms1. These wave forms are derived from the summation of different rhythms rather than being a rhythm generated by a single cell or group of cells. The cortex also sends input signals to other areas within ...
... the thalamus. The cerebral cortex and the thalamus often work together in generating brain rhythms1. These wave forms are derived from the summation of different rhythms rather than being a rhythm generated by a single cell or group of cells. The cortex also sends input signals to other areas within ...
Olfactory processing: maps, time and codes Gilles Laurent
... The possible importance of time Most of our sensory experiences are dynamic. We listen to speech and music, observe insects (some of us), cars and children, and, therefore, are constantly assessing the state of our changing sensory environment. Our ability to deal with such complex situations — such ...
... The possible importance of time Most of our sensory experiences are dynamic. We listen to speech and music, observe insects (some of us), cars and children, and, therefore, are constantly assessing the state of our changing sensory environment. Our ability to deal with such complex situations — such ...
CNS_notes
... Each column has multiple tracts Each tract is either ascending or descending (i.e. sensory or motor, i.e. afferent or efferent) Tracts are organized by body region served Sensory & Motor Pathways (= Ascending & Descending Pathways = Afferent & Efferent Pathways) Sensory Two pathways lead from periph ...
... Each column has multiple tracts Each tract is either ascending or descending (i.e. sensory or motor, i.e. afferent or efferent) Tracts are organized by body region served Sensory & Motor Pathways (= Ascending & Descending Pathways = Afferent & Efferent Pathways) Sensory Two pathways lead from periph ...
Resting potential
... • Early Greeks were not impressed with the brain. They suggested that the brain’s main function was to cool the blood. They were much more impressed by the heart. They proposed that the heart was the source of feelings and thoughts. Hippocrates, however, observed the effect of head injuries on peopl ...
... • Early Greeks were not impressed with the brain. They suggested that the brain’s main function was to cool the blood. They were much more impressed by the heart. They proposed that the heart was the source of feelings and thoughts. Hippocrates, however, observed the effect of head injuries on peopl ...
Lecture : Spinal Reflexes
... rapid small changes in length. This means that, overall, muscle spindles are nonlinear receptors because they only show linear behavior for small changes in length. We will come back to this non-linear behavior later. - Response of Ia to gamma activation (Fig 36-3C). Why have gamma activation? Becau ...
... rapid small changes in length. This means that, overall, muscle spindles are nonlinear receptors because they only show linear behavior for small changes in length. We will come back to this non-linear behavior later. - Response of Ia to gamma activation (Fig 36-3C). Why have gamma activation? Becau ...
Theoretical neuroscience: Single neuron dynamics and computation
... • Experimental tools: high resolution imaging, electron microscopy ...
... • Experimental tools: high resolution imaging, electron microscopy ...
I. Nervous System
... The nervous system can be characterized according to the functional and anatomical principles. According to the functional principle the nervous system (NS) consists of: 1. the somatic nervous system which is responsible for coordinating voluntary body movements (i.e. activities that are under consc ...
... The nervous system can be characterized according to the functional and anatomical principles. According to the functional principle the nervous system (NS) consists of: 1. the somatic nervous system which is responsible for coordinating voluntary body movements (i.e. activities that are under consc ...
Neural Networks
... A neuron is a cell in the brain that collects, processes and disseminates electric signals On their own, neurons are not particularly complex Much of the brain’s information-processing capacity is thought to stem from the number of and interrelationships between the neurons. As such is an emergent p ...
... A neuron is a cell in the brain that collects, processes and disseminates electric signals On their own, neurons are not particularly complex Much of the brain’s information-processing capacity is thought to stem from the number of and interrelationships between the neurons. As such is an emergent p ...
Nervous System
... All sensory neurons that transmit impulses from internal organs to the CNS All motor neurons that transmit impulses from the CNS to • Smooth muscle • Cardiac muscles • Glands ...
... All sensory neurons that transmit impulses from internal organs to the CNS All motor neurons that transmit impulses from the CNS to • Smooth muscle • Cardiac muscles • Glands ...
02.23.06 Lecture 17
... cortex they send out axons that stretch specialized cellular structures into other parts of the brain Chemoattractant ...
... cortex they send out axons that stretch specialized cellular structures into other parts of the brain Chemoattractant ...
Brain lateralisation: a question of spatial frequency?
... When a neuron is activated, current flows from the cell body to the axon terminal To be registered by electrodes on the scalp many neurons would need to fire at the same time, which is unlikely given that action potentials lasts around 1msec No dipole created ...
... When a neuron is activated, current flows from the cell body to the axon terminal To be registered by electrodes on the scalp many neurons would need to fire at the same time, which is unlikely given that action potentials lasts around 1msec No dipole created ...
Stimulus (physiology)
In physiology, a stimulus (plural stimuli) is a detectable change in the internal or external environment. The ability of an organism or organ to respond to external stimuli is called sensitivity. When a stimulus is applied to a sensory receptor, it normally elicits or influences a reflex via stimulus transduction. These sensory receptors can receive information from outside the body, as in touch receptors found in the skin or light receptors in the eye, as well as from inside the body, as in chemoreceptors and mechanorceptors. An internal stimulus is often the first component of a homeostatic control system. External stimuli are capable of producing systemic responses throughout the body, as in the fight-or-flight response. In order for a stimulus to be detected with high probability, its level must exceed the absolute threshold; if a signal does reach threshold, the information is transmitted to the central nervous system (CNS), where it is integrated and a decision on how to react is made. Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.