Sökning: "neocortical model"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden neocortical model.

1. 1. Investigations of neural attractor dynamics in human visual awareness

   Författare :David N. Silverstein; Pawel Herman; Martin Ingvar; Karl Friston; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; attractor dynamics; visual awareness; visual perception; visual attention; attentional blink; backward masking; gliomas; brain tumor; white matter; cell assemblies; neocortical model; threat response; fear signaling; amygdala; Biological Physics; Biologisk fysik; Computer Science; Datalogi; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

   Sammanfattning : What we see, how we see it and what emotions may arise from stimuli has long been studied by philosophers, psychologists, medical doctors and neuroscientists. This thesis work investigates a particular view on the possible dynamics, utilizing computational models of spiking neural attractor networks. LÄS MER

3. 2. Synaptic plasticity in local networks of neocortical layer 2/3

   Författare :Misha Zilberter; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Neocortical microcircuit; layer 2 3; pyramidal cell; spike timing- dependent plasticity; LTP; LTD; FSN interneuron; retrograde signalling; SAT2;

   Sammanfattning : The neocortex is a hierarchal organ in which information processing takes on place on many levels, from subcellular signalling all the way to neural networks. Neocortical local neuronal networks (microcircuits), composed of interconnected neurons, form elementary information processing units within the cortex. LÄS MER

4. 3. Neocortical interpretation of haptic and visual events across brain states: Electrophysiological investigations in sensory information processing

   Författare :Sofie Skårup Kristensen; Hjärnans sensorimotoriska funktioner; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Haptics; Visual; Multisensory; Cortical; Rodent; Neurophysiology; Tactile; Electrophysiology;

   Sammanfattning : This thesis delves into the complex architecture of dynamic sensory information processing in the neocortex. Specifically, it asks how primary sensory cortical regions are influenced by local and widespread cortical state changes. LÄS MER

5. 4. Information Processing in the Nervous System. On a Holistic Functional Organization Principle

   Författare :Jonas Enander; Hjärnans sensorimotoriska funktioner; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Somatosensory; Tactile; Neuron; Neocortex; Brain organization; Cortical functional localization;

   Sammanfattning : This thesis is concerned with the nature of information processing in the nervous system. This issue has been investigated with animal experiments, using male Sprague–Dawley rats, and simulated touch generated by an artificial fingertip with neuromorphic tactile sensors. LÄS MER

7. 5. Neuromodulation, Short-Term and Long-Term Plasticity in Corticothalamic and Hippocampal Neuronal Networks

   Författare :Sofie Sundberg; Björn Granseth; Fredrik Elinder; Eric Hanse; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : Research in neuroscience relies to a large extent on the use of genetically modified animals. Extensive validation of new and existing models is a requirement for the acquisition of trustworthy data and to enable generalization to human physiology and disease. LÄS MER