Functional areas of cerebral cortex and its associated lesions
... Left hemisphere – more control over: language, math, and logic Right hemisphere – more involved with: Visual-spatial skills ...
... Left hemisphere – more control over: language, math, and logic Right hemisphere – more involved with: Visual-spatial skills ...
Ph.D. THESIS THE NEUROMODULATOR AND
... Electrical stimuli spread through intercellular connections, synapses. We can distinguish chemical, electrical and combined synapses. In the case of chemical synapses, a presynaptic neuron releases chemical signal compounds, neurotransmitters. These transmitters interact with specific receptor prote ...
... Electrical stimuli spread through intercellular connections, synapses. We can distinguish chemical, electrical and combined synapses. In the case of chemical synapses, a presynaptic neuron releases chemical signal compounds, neurotransmitters. These transmitters interact with specific receptor prote ...
VL_CHAPTER_4
... In fMRI studies, blood flow response to different regions of the brain is measured and is thought to reflect activity related to the processing of a stimulus. Structural anatomical images are obtained for each individual tested using fMRI and are graphically flattened in order to plot the blood flow ...
... In fMRI studies, blood flow response to different regions of the brain is measured and is thought to reflect activity related to the processing of a stimulus. Structural anatomical images are obtained for each individual tested using fMRI and are graphically flattened in order to plot the blood flow ...
chapter3 (new window)
... • People see an illusion of gray images in intersections of white areas. • Signals from bipolar cells cause effect – Receptors responding to white corridors send inhibiting signals to receptor at the ...
... • People see an illusion of gray images in intersections of white areas. • Signals from bipolar cells cause effect – Receptors responding to white corridors send inhibiting signals to receptor at the ...
How do we manage to remember smells despite the fact
... (via their receptors) respond to submolecular features of the volatile chemicals coming from those objects. For example, an olfactory sensory receptor neuron may respond to a hydrocarbon chain of a particular length or a specific functional group like an alcohol or aldehyde. This means that any give ...
... (via their receptors) respond to submolecular features of the volatile chemicals coming from those objects. For example, an olfactory sensory receptor neuron may respond to a hydrocarbon chain of a particular length or a specific functional group like an alcohol or aldehyde. This means that any give ...
Features of Neuronal Synchrony in Mouse Visual Cortex
... Wuppertal, Germany; 2 mg/kg, ip), a tracheotomy was made for artificial ventilation, and the animal was placed in a stereotaxic apparatus. Throughout surgery and during the recordings, general anesthesia was maintained by ventilating the animal with a mixture of 50% N2O and 50% O2 supplemented by 0. ...
... Wuppertal, Germany; 2 mg/kg, ip), a tracheotomy was made for artificial ventilation, and the animal was placed in a stereotaxic apparatus. Throughout surgery and during the recordings, general anesthesia was maintained by ventilating the animal with a mixture of 50% N2O and 50% O2 supplemented by 0. ...
Psychiatry`s age of enlightenment
... A main advantage of optogenetics over other traditional approaches to neuromodulation, such as electrophysiology, is the spatial resolution that can be achieved. For instance, in a heterogeneous population of neurons, an electrode would stimulate all neurons within the vicinity, regardless of subtyp ...
... A main advantage of optogenetics over other traditional approaches to neuromodulation, such as electrophysiology, is the spatial resolution that can be achieved. For instance, in a heterogeneous population of neurons, an electrode would stimulate all neurons within the vicinity, regardless of subtyp ...
Chapter 6
... Role of the visual association cortex Two streams of visual analysis – Visual info receive from the striate cortex is analyzed in the visual assc cortex – Neurons in the striate cortex project to the extrastriate cortex, which surrounds the visual assc cortex – The primate extrastriate cortex consi ...
... Role of the visual association cortex Two streams of visual analysis – Visual info receive from the striate cortex is analyzed in the visual assc cortex – Neurons in the striate cortex project to the extrastriate cortex, which surrounds the visual assc cortex – The primate extrastriate cortex consi ...
Neural Network
... As you read these words you are using a complex biological neural network. You have a highly interconnected set of 1011 neurons to facilitate your reading, breathing, motion and thinking. In the artificial neural network, the neurons are not biological. They are extremely simple abstractions of biol ...
... As you read these words you are using a complex biological neural network. You have a highly interconnected set of 1011 neurons to facilitate your reading, breathing, motion and thinking. In the artificial neural network, the neurons are not biological. They are extremely simple abstractions of biol ...
Chapter 16: Consciousness
... Much information processing involves special-purpose unconscious processors operating in parallel, leading to the assumption that early processing should be similar for stimuli that are and are not consciously perceived. Consciousness integrates information. Brain areas associated with conscio ...
... Much information processing involves special-purpose unconscious processors operating in parallel, leading to the assumption that early processing should be similar for stimuli that are and are not consciously perceived. Consciousness integrates information. Brain areas associated with conscio ...
CNS lecture
... o RAS: arousal system o Complex polysynaptic path in brainstem and thalamus RF o Receives messages from neurons on spine and other parts and communicates with cerebral cortex with complex circuits o Ultimately responsible for consciousness o Extent of RAS activity determines state of alertness (focu ...
... o RAS: arousal system o Complex polysynaptic path in brainstem and thalamus RF o Receives messages from neurons on spine and other parts and communicates with cerebral cortex with complex circuits o Ultimately responsible for consciousness o Extent of RAS activity determines state of alertness (focu ...
Multimodal Virtual Environments: Response Times, Attention, and
... Pressing a button on the stylus as soon as they detected the stimuli Computer generated the stimulation randomly Consisted of six blocks of trails (three with dominant hand, three with the other hand) Each of blocks consisted of 105 single trail, in which each of the seven conditions ...
... Pressing a button on the stylus as soon as they detected the stimuli Computer generated the stimulation randomly Consisted of six blocks of trails (three with dominant hand, three with the other hand) Each of blocks consisted of 105 single trail, in which each of the seven conditions ...
Attention and Consciousness
... inputs. Selective attention may involve a binocular rivalry when each eye receives different input. Any sources of input that cannot be integrated into a single consciously perceive whole tend to compete against each other and require selective attention. ...
... inputs. Selective attention may involve a binocular rivalry when each eye receives different input. Any sources of input that cannot be integrated into a single consciously perceive whole tend to compete against each other and require selective attention. ...
lecture notes - The College of Saint Rose
... Compares the result with a threshold value, q If the net input is less than the threshold, the neuron output is –1 (or 0) Otherwise, the neuron becomes activated and its output is +1 ...
... Compares the result with a threshold value, q If the net input is less than the threshold, the neuron output is –1 (or 0) Otherwise, the neuron becomes activated and its output is +1 ...
Occipital Lobe
... the late 1700's and spanned over a century. Investigators had little understanding of how the brain worked. ...
... the late 1700's and spanned over a century. Investigators had little understanding of how the brain worked. ...
Volitional enhancement of firing synchrony and oscillation
... demonstrated the ability to directly modulate and enhance specific patterns of synchrony of many neurons in somewhat broad ranges, which may be related to several motor functions of the brain. On the other hand, it is desirable to directly demonstrate operant enhancement of firing synchrony among i ...
... demonstrated the ability to directly modulate and enhance specific patterns of synchrony of many neurons in somewhat broad ranges, which may be related to several motor functions of the brain. On the other hand, it is desirable to directly demonstrate operant enhancement of firing synchrony among i ...
Watching synapses during sensory information
... neurons with a Ca2+-sensitive indicator, and two-photon microscopy was used to image the Ca2+ signals evoked by visual stimuli with different orientations. The observed rapid and localized signals with this approach were distributed throughout the dendritic tree and probably represented sensory inpu ...
... neurons with a Ca2+-sensitive indicator, and two-photon microscopy was used to image the Ca2+ signals evoked by visual stimuli with different orientations. The observed rapid and localized signals with this approach were distributed throughout the dendritic tree and probably represented sensory inpu ...
Brain Mechanisms of Memory and Cognition
... Higher visual cortical processing can be roughly divided into areas that are concerned with the analysis of objects (form, colour, etc.), and areas that are concerned with their spatial location and movement. The former appears to be mediated by a ventral stream, and the latter by a dorsal stream (U ...
... Higher visual cortical processing can be roughly divided into areas that are concerned with the analysis of objects (form, colour, etc.), and areas that are concerned with their spatial location and movement. The former appears to be mediated by a ventral stream, and the latter by a dorsal stream (U ...
The evolution of complex gene regulation by low
... Transcriptional regulators integrate signals from genes and the environment to ensure that the correct patterns of gene expression are maintained in the cell [1– 8]. This can be a complicated task, particularly in higher eukaryotes where processes such as cell differentiation and complex inter-cellu ...
... Transcriptional regulators integrate signals from genes and the environment to ensure that the correct patterns of gene expression are maintained in the cell [1– 8]. This can be a complicated task, particularly in higher eukaryotes where processes such as cell differentiation and complex inter-cellu ...
Bioinspired Computing Lecture 5
... Thus, we would expect to find very few ‘redundant’ neurons with co-varying outputs in that network. Accordingly, an optimal temporal coding circuit might tend to eliminate redundancy in the pattern of inputs to different neurons. On the other hand, if neural information is carried by a noisy rate-ba ...
... Thus, we would expect to find very few ‘redundant’ neurons with co-varying outputs in that network. Accordingly, an optimal temporal coding circuit might tend to eliminate redundancy in the pattern of inputs to different neurons. On the other hand, if neural information is carried by a noisy rate-ba ...
pylyshyn_index
... selects objects to be transformed by coordinate transformations 196 spreads to cover perceived object ...
... selects objects to be transformed by coordinate transformations 196 spreads to cover perceived object ...
Modeling cortical maps with Topographica
... gions, such as an auditory or visual processing pathway, and simulate a large enough area to allow the organization and function of each map to be studied. The external environment must also be simulated, including playback of visual images, audio recordings, and test patterns. Current models typic ...
... gions, such as an auditory or visual processing pathway, and simulate a large enough area to allow the organization and function of each map to be studied. The external environment must also be simulated, including playback of visual images, audio recordings, and test patterns. Current models typic ...