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- Hayden Lab
- Hayden Lab

... chosen offer but not the unchosen one, suggesting that the processes we are observing generate a choice. (4) After accounting for option values, variability in firing rates after presentation of the offers predicted choices. This fourth finding is analogous to the idea of choice probability in perce ...
Regulation of Neuroblast Cell-Cycle Kinetics Plays a Crucial Role in
Regulation of Neuroblast Cell-Cycle Kinetics Plays a Crucial Role in

... to ensure optimal blackening levels, which minimizes the problem of f used grains (Dörmer, 1967; Rogers, 1967; Dörmer and Brinkmann, 1968; Dörmer and Möller, 1968; Sidman, 1970). This is illustrated for individual neurons in different layers of parietal area 3 after injection on E14.5 (Fig. 1). ...
relation between cell size and response characteristics of
relation between cell size and response characteristics of

... the cell body and the axonal diameter of LVN neurons (Deiters, 1865) and physiologic measurements of axonal conduction velocity of LVN neurons activated antidromically from the lumbar cord (Ito et al., 1964; Wilson et al., 1967; Akaike et al., 1973) have confirmed this finding. Finally, these two ne ...
Neural Correlates for Perception of 3D Surface Orientation from
Neural Correlates for Perception of 3D Surface Orientation from

... and spread throughout the cell as the worm moved. In contrast, mitochondria in anc1(e1873) animals were spherically shaped, often clustered together, and were pushed around within the cytoplasm as the animal moved (Fig. 4B). Mitochondria were not shaped or positioned properly in an unc-60(r398) muta ...
Huffman PowerPoint Slides
Huffman PowerPoint Slides

... – Twin studies: compare the concordance (agreement) rates between identical and fraternal twins – Adoption studies: compare the similarity between adopted children and their biological/adopted parents – Mutations: examine behaviors in genetically abnormal subjects or in animals in which a specific g ...
Nucleus Gracilis: An Integrator for Visceral and Somatic Information
Nucleus Gracilis: An Integrator for Visceral and Somatic Information

... Al-Chaer, Elie D., Karin N. Westlund, and William D. Willis. Nucleus gracilis: an integrator for visceral and somatic information. J. Neurophysiol. 78: 521–527, 1997. The nucleus gracilis (NG) receives an abundance of visceral input from various abdominal organs and is proposed to play an important ...
A framework for the first-person internal sensation of visual
A framework for the first-person internal sensation of visual

... potential, neuronal firing is non-specific with regards to its inputs. For example, in a pyramidal neuron with thousands of inputs, the arrival of nearly any set of 40 excitatory postsynaptic potentials (EPSPs) at the axonal hillock can lead to its firing (Palmer et al. 2014). (2) Secondly, dependin ...
Vestibular Signals of Posterior Parietal Cortex Neurons during
Vestibular Signals of Posterior Parietal Cortex Neurons during

... A total of 106 cells were recorded in the intraparietal sulcus of two left hemispheres of two macaque monkeys in response to various visual, vestibular, and oculomotor paradigms, and active-passive head-movement comparisons. Posterior Parietal Vestibular Neurons during Pursuit Head Movements Posteri ...
Neurophysiology of sleep-wake states in relation to consciousness
Neurophysiology of sleep-wake states in relation to consciousness

... potentials (EPSPs), which easily pass the low-level threshold of geniculate neurons firing in the tonic or relay mode. Obviously, this can be regarded as the underlying process of the high transfer ratio. All EPSPs generate outgoing action potentials and the transmission occurs in a way of ‘one inp ...
Feedforward and feedback inhibition in neostriatal GABAergic spiny
Feedforward and feedback inhibition in neostriatal GABAergic spiny

... Tepper, unpublished). There is a strong medio-lateral gradient in the distribution of PV+ axons and terminals suggesting that these cells may be more integral to functioning in lateral striatum than medial striatum (Bolam and Bennett, 1995). The neurons exhibit a very hyperpolarized membrane potenti ...
Psychology Chapter A - Oxford University Press
Psychology Chapter A - Oxford University Press

... order to understand the different kinds of cells in the nervous system, you could consider a simple action such as washing a cup. When you want to wash a cup you pour some water into a sink, add some soap, and feel the water to make sure that it is not too hot. You then hold the cup with one hand an ...
The role of the medial prefrontal cortex in learning and reward Ph.D
The role of the medial prefrontal cortex in learning and reward Ph.D

... fix interstimulus interval (24 sec) was used. The 2 sec CS was followed by a 1 sec trace interval (trace conditioning). This was followed by the US (12 sec). During the experimental session 50-50 CS1-US1 and CS2-US2 parings were presented pseudorandomly. After conditioning data from totally 24 exper ...
Number, size and distribution of ganglion neurons in urinary bladder
Number, size and distribution of ganglion neurons in urinary bladder

... sacrificed with an overdose of ether and after opening the abdominal wall and cutting the pubic symphysis, the urinary bladder was re­ moved with the distal segment of the ureter and the proximal portion of the urethra. The bladder was filled with Giemsa's fixative solution moderately distending the ...
KCNQ/M Channels Control Spike Afterdepolarization and Burst
KCNQ/M Channels Control Spike Afterdepolarization and Burst

... tated with a guillotine. The brain was removed and immersed immediately in ice-cold oxygenated (95% O2–5% CO2) dissection artificial CSF (ACSF). The caudal two-thirds of one hemisphere (containing one hippocampus) were glued to the stage of a vibratome (Leica, Nussloch, Germany). Transverse slices ( ...
Cochlea and Auditory Pathways
Cochlea and Auditory Pathways

... nerve (which hair cells of the spiral organ; what place along the basilar membrane) are maximally active (for > 200 Hz). As the pitch (Hz) of a sound increases, the peak amplitude of basilar membrane displacement regresses, from the apex (longest fibers) toward the base (shortest fibers) of the coch ...
Chapter 2 The Neural Bases of Learning and Memory
Chapter 2 The Neural Bases of Learning and Memory

... 8. The synaptic potential created in a distant dendritic branch would most likely be _____ when it arrived at the cell body. a. small c. average b. large d. it depends on where it occurred ANS: A ...
found that in flight, 3D hippocampal place cells had nearly spherical
found that in flight, 3D hippocampal place cells had nearly spherical

... kingdom. Several navigational strategies are used by animals, among them maplike navigation (1). This strategy relies on a set of brain structures, at the hub of which is the hippocampus (1, 2). This brain area contains “place cells,” neurons that activate when the animal enters a restricted region ...
Detectable - NeuroScience Associates
Detectable - NeuroScience Associates

... Any plane is suitable, however most researchers use coronal sections for analysis ...
Development of the Nervous System of Carinina ochracea
Development of the Nervous System of Carinina ochracea

... To elucidate the comparative development of the nervous system, fluorescent labeling of serotonin-like (5HT-lir), FMRFamide-like (RFa-lir), and acetylated α-tubulin-like (tub-lir) immunoreactivity, and its detection by confocal laser scanning microscopy (IF/CLSM), has recently been performed on a br ...
Chapter 20 The Autonomic Nervous System
Chapter 20 The Autonomic Nervous System

... Abdomen, and Pelvis ...
ap psych 2012 unit 3a and 3b
ap psych 2012 unit 3a and 3b

... ____ 31. To identify which specific brain areas are most active during a particular mental task, researchers would be most likely to make use of a(n) a. fMRI. b. hemispherectomy. c. ACh agonist. d. brain lesion. e. MRI. ____ 32. Transferring messages from a motor neuron to a leg muscle requires the ...
Mapping Function Onto Neuronal Morphology
Mapping Function Onto Neuronal Morphology

... Submitted 15 August 2006; accepted in final form 10 April 2007 ...
Optical Imaging of Neural Structure and Physiology: Confocal
Optical Imaging of Neural Structure and Physiology: Confocal

... Over the past century, neuroanatomists have made tremendous strides toward mapping basic neuronal structure and connectivity, largely due to the extensive application of the Golgi technique (e.g., Ramón y Cajal, 1911). The Golgi stain generates a dense reaction product within most or all of the intr ...
Voltage-Sensitive Dye Imaging: Technique review and Models
Voltage-Sensitive Dye Imaging: Technique review and Models

... has already been done and what will be interesting to do in order to interpret the origins of the optical imaging signal. 1. VSDI for beginners 1.1. General principle In this review, we focus on optical imaging based on voltage sensitive dyes (VSDI). This optical imaging technique offers the possibi ...
Functional maps within a single neuron
Functional maps within a single neuron

... either locally or globally, in an intricately coupled manner. Several common themes emerge by comparing plasticity in these intraneuronal maps to plasticity in sensory maps. For instance, studies involving the effects of dark rearing on various visual maps could be metaphorically related to the stud ...
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Single-unit recording

In neuroscience, single-unit recordings provide a method of measuring the electro-physiological responses of single neurons using a microelectrode system. When a neuron generates an action potential, the signal propagates down the neuron as a current which flows in and out of the cell through excitable membrane regions in the soma and axon. A microelectrode is inserted into the brain, where it can record the rate of change in voltage with respect to time. These microelectrodes must be fine-tipped, high-impedance conductors; they are primarily glass micro-pipettes or metal microelectrodes made of platinum or tungsten. Microelectrodes can be carefully placed within (or close to) the cell membrane, allowing the ability to record intracellularly or extracellularly.Single-unit recordings are widely used in cognitive science, where it permits the analysis of human cognition and cortical mapping. This information can then be applied to brain machine interface (BMI) technologies for brain control of external devices.
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