Katie Newhall Synchrony in stochastic pulse-coupled neuronal network models
... Synchrony in stochastic pulse-coupled neuronal network models
Many pulse-coupled dynamical systems possess synchronous attracting states.
Even stochastically driven model networks of Integrate and Fire neurons
demonstrate synchrony over a large range of parameters. We study the interplay
Optional extra slides on the Binding Problem
... Synchrony might also contribute to synaptic plasticity :
Dynamic interplay between LTD and LTP could work to
create new connections in response to a stimulus that
are reset to near initial conditions when the stimulus is
removed (e.g. Loebel and Tsyodyks, 2002).
Review 2 - Texas A&M University
... square stimulus creates a square image on the retina. However, this image
could also have been created by the other two shapes and many other stimuli.
This is why we say that the image on the retina is ambiguous.
The Binding Problem
... system. Stereotyped, frequently occurring conjunctions are represented by specific binding
units, because this strategy is faster and less susceptible to binding errors. However, because
there are not enough neurons to exhaust the whole combinatorial space, population codes
provide a possibility to ...
... V cells—approximately 10%–20% of pyramidal tract
neurons (PTN) in M1—their known anatomic and functional properties can be exploited to reveal general neural processing properties. A further advantage of studying neural synchrony of CM cells is that it can be done
in awake preparations.
Synchrony in ...
Lecture 2 - Computer Science
... •The light hits surfaces and interacts with them, with some being
reflected, some absorbed and some transmitted.
•The reflected light may bounce off multiple surfaces before
reaching the eye.
•Some of the light rays will eventually reach the eye and be
focused on the retina.
•We will diagram this in ...
Consciousness and Awareness
... A Gordon: “If I move my arms back and forth in front of my eyes, I see them,
even though I have been blind for more than thirty years.”
J Lusseyran: “My screen was always as big as I needed it to be. Because it
was nowhere in space and everywhere at the same time…”
Sistemas sensoriales - U
... Figure 1.5). (C) The stretch reflex operates as a negative feedback loop to regulate muscle length.
INC-IEM Neuroengineering Seminar - 13-11-04
... of neuroprostheses is now emerging that aims to combine neural recording, signal processing, and
microstimulation functionalities for closed-loop operation. These devices might use information
extracted from the brain neural activity to trigger microstimulation or modulate stimulus parameters in
... (Joule/sec) would such a theoretical brain release?
... • There are about 1012 neurons in the human brain.
... severed, the hemispheres are no longer able to communicate, leading to certain problems
that usually arise only in test conditions. For example, while the left side of the brain can
verbally describe what is going on in the right visual field, the right hemisphere is
essentially mute, instead relyin ...
Bayesian Curve Fitting and Neuron Firing Patterns
... has involved examining neuronal activity in laboratory animals under varying experimental
conditions. Neural information is represented and communicated through series of action
potentials, or spike trains, and the central scientiﬁc issue in many studies concerns the
physiological signiﬁcance that s ...
Explaining How a Thought is Formed
... How you believe you must react to external events
How you are expected to react to external events
What you can expect from other people, from life or from the world
The way the world works
How the world reacts to you
Beliefs can be complex. For example, the belief “I am not capable can be ...
How Does the Brain Work?
... Throughout the brain, neurons communicate with one another through interlocking circuits. When a
neuron is stimulated, it generates a tiny electrical current, which passes down a fiber, or axon. The end
of the axon releases neurotransmitters —chemicals that cross a microscopic gap, or synapse — to
Local Cortical Circuits
... Synaptic Relations Between Adjacent Neurons
Sources of Excitation Within Groups of Neurons
Is the Cortical Network Randomly Connected?
COLOUR VISION Newton`s Prism Experiments: a white light beam
... Mechanisms Summary: Several key areas of the brain contain neurons that respond to sensory inputs from two or more
modalities (e.g., superior colliculus, parietal, temporal and prefrontal cortex) and are superadditive. Needs revision to include
direct connections between sensory areas, & more extens ...
The binding problem is a term used at the interface between neuroscience, cognitive science and philosophy of mind that has multiple meanings.Firstly, there is the segregation problem: a practical computational problem of how brains segregate elements in complex patterns of sensory input so that they are allocated to discrete ""objects"". In other words, when looking at a blue square and a yellow circle, what neural mechanisms ensure that the square is perceived as blue and the circle as yellow, and not vice versa? The segregation problem is sometimes called BP1.Secondly, there is the combination problem: the problem of how objects, background and abstract or emotional features are combined into a single experience. The combination problem is sometimes called BP2.However, the difference between these two problems is not always clear. Moreover, the historical literature is often ambiguous as to whether it is addressing the segregation or the combination problem.