Stereoscopic Mechanisms in Monkey Visual Cortex: Binocular
... Two aspects of the S-dimensional properties of cortical neurons were evaluated: horizontal disparity selectivity and binocular correlation sensitivity. (1) Positionaldisparity selectivity was determined with moving or flashing “optimal” bars presented stereoscopically (solid figure stereograms) agai ...
... Two aspects of the S-dimensional properties of cortical neurons were evaluated: horizontal disparity selectivity and binocular correlation sensitivity. (1) Positionaldisparity selectivity was determined with moving or flashing “optimal” bars presented stereoscopically (solid figure stereograms) agai ...
pdf file. - Harvard Vision Lab
... 100–300 ms after probe onset). We isolated 13 neurons long enough to test the midpoint, and every one exhibited no change there as activity jumped to the FF. The pooled data from all 13 neurons (Fig. 2c, bottom) showed that just before a saccade, the average activity dropped slightly at the RF, rose ...
... 100–300 ms after probe onset). We isolated 13 neurons long enough to test the midpoint, and every one exhibited no change there as activity jumped to the FF. The pooled data from all 13 neurons (Fig. 2c, bottom) showed that just before a saccade, the average activity dropped slightly at the RF, rose ...
Hikosaka O - lsr
... evidence suggests that similar neural mechanisms underlie sleep and anesthaesia23, indicating that habenula activity may also increase during sleep. Fourth, in hibernating squirrels LHb neurons show increased activity24 and MHb neurons show elevated levels of the rate-limiting enzyme for the synthes ...
... evidence suggests that similar neural mechanisms underlie sleep and anesthaesia23, indicating that habenula activity may also increase during sleep. Fourth, in hibernating squirrels LHb neurons show increased activity24 and MHb neurons show elevated levels of the rate-limiting enzyme for the synthes ...
The Cat is Out of the Bag: Cortical Simulations with 109 Neurons
... Across the surface of the cortical sheet, neurons are organized into repeating functional units called hypercolumns, each 200 − 800 µm in diameter and spanning all cortical layers [28]. The cortex is densely interconnected with the thalamus, a small body that serves as a center to distribute signals ...
... Across the surface of the cortical sheet, neurons are organized into repeating functional units called hypercolumns, each 200 − 800 µm in diameter and spanning all cortical layers [28]. The cortex is densely interconnected with the thalamus, a small body that serves as a center to distribute signals ...
A Neurodynamical cortical model of visual attention and
... lead to the neurodynamical model that we present here for invariant hierarchical object recognition and selective visual attention. The equations for the model are provided in Appendix A, and the following text explains the model. Within each module a competitive network is implemented by local late ...
... lead to the neurodynamical model that we present here for invariant hierarchical object recognition and selective visual attention. The equations for the model are provided in Appendix A, and the following text explains the model. Within each module a competitive network is implemented by local late ...
Chapter 2 The Neural Bases of Learning and Memory
... Francis Gall tried to map out faculties that were localized in specific brain areas. Clinical and experimental work, however, did not support his map of faculties. Functional magnetic resonance imaging (fMRI) technology has allowed a deeper look into the activity of specific brain areas while indivi ...
... Francis Gall tried to map out faculties that were localized in specific brain areas. Clinical and experimental work, however, did not support his map of faculties. Functional magnetic resonance imaging (fMRI) technology has allowed a deeper look into the activity of specific brain areas while indivi ...
Abstracts - BCCN 2009
... A slightly more subtle change was the expansion of topic areas covered by the program. In response to the growing interest in more applied research topics as represented by the new Bernstein Foci for Neurotechnology, we have introduced a demonstration track and several exhibits will be shown at the ...
... A slightly more subtle change was the expansion of topic areas covered by the program. In response to the growing interest in more applied research topics as represented by the new Bernstein Foci for Neurotechnology, we have introduced a demonstration track and several exhibits will be shown at the ...
Basal Ganglia Outputs Map Instantaneous Position Coordinates
... Subjects and surgery. All procedures were approved by the Duke University Institutional Animal Care and Use Committee. Ten male C57BL6/J mice (25–31 g) were used in the experiments. Detailed procedures for surgeries have been described previously (Fan et al., 2011, 2012; Rossi et al., 2013a). Sixtee ...
... Subjects and surgery. All procedures were approved by the Duke University Institutional Animal Care and Use Committee. Ten male C57BL6/J mice (25–31 g) were used in the experiments. Detailed procedures for surgeries have been described previously (Fan et al., 2011, 2012; Rossi et al., 2013a). Sixtee ...
HYPOTHALAMUS
... receive a variety of stimuli from different parts of the brain, primarily within the hypothalamus, but also from extrahypothalamic areas including the amygdaloid body, hippocampus and various brainstem areas. Furthermore, it is well known that monoamines and several neuropeptides serve as modulators ...
... receive a variety of stimuli from different parts of the brain, primarily within the hypothalamus, but also from extrahypothalamic areas including the amygdaloid body, hippocampus and various brainstem areas. Furthermore, it is well known that monoamines and several neuropeptides serve as modulators ...
Aggregate Input-Output Models of Neuronal Populations
... order statistics such as cross-correlation and coherence measures are often used to gauge the relationship between the spiking activity of pairs of neurons [4], [5]. However, these are limited measures that provide snapshots of interactions between individual neurons from different regions. They she ...
... order statistics such as cross-correlation and coherence measures are often used to gauge the relationship between the spiking activity of pairs of neurons [4], [5]. However, these are limited measures that provide snapshots of interactions between individual neurons from different regions. They she ...
Functional architecture in monkey inferotemporal cortex revealed by
... The initial surgery was carried out under anesthesia with pentobarbital sodium (35 mg/kg i.p., supplemented by 10 mg/kg if necessary). A brass block for head fixation was attached to the top of the skull, the zygomatic arch was trimmed, two stainless steel bolts for EEG recordings were implanted in ...
... The initial surgery was carried out under anesthesia with pentobarbital sodium (35 mg/kg i.p., supplemented by 10 mg/kg if necessary). A brass block for head fixation was attached to the top of the skull, the zygomatic arch was trimmed, two stainless steel bolts for EEG recordings were implanted in ...
Programmed Learning Review - Germantown School District
... number of correct reponses it is on a schedule of reinforcement. If the animal gets reinforced after the first response after a 20 second interval it is on a schedule. If the animal gets reinforced after so many correct responses, but that number changes randomly it is on a variable ratio schedule. ...
... number of correct reponses it is on a schedule of reinforcement. If the animal gets reinforced after the first response after a 20 second interval it is on a schedule. If the animal gets reinforced after so many correct responses, but that number changes randomly it is on a variable ratio schedule. ...
Brain oscillations and memory - Wellcome Trust Centre for
... MEG (e.g. [57]). This could potentially enable noninvasive decoding of large-scale neural activity with high temporal resolution. In one MEG study, MVPC analysis detected replay of encoded stimulus features during maintenance [57]. Replay was specific to whether the maintained stimulus depicted an i ...
... MEG (e.g. [57]). This could potentially enable noninvasive decoding of large-scale neural activity with high temporal resolution. In one MEG study, MVPC analysis detected replay of encoded stimulus features during maintenance [57]. Replay was specific to whether the maintained stimulus depicted an i ...
Cerebral blood flow and gray matter volume covariance patterns of
... et al., 2011; Zimmerman et al., 2006]. A recent review of the structural correlates of cognition across that lifespan demonstrated that the direction of these changes is in dispute [Kaup et al., 2011]. Most studies demonstrated positive relationships between GMV and cognitive performance: larger bra ...
... et al., 2011; Zimmerman et al., 2006]. A recent review of the structural correlates of cognition across that lifespan demonstrated that the direction of these changes is in dispute [Kaup et al., 2011]. Most studies demonstrated positive relationships between GMV and cognitive performance: larger bra ...
The functional asymmetry of auditory cortex is reflected
... to map functional connections between a neuron and its presynap tic inputs in vitro4,5. This technique has revealed distinct patterns of functional connectivity in different cortical areas, including the whisker barrel somatosensory3,6, motor7 and auditory8 cortices. These studies showed that altho ...
... to map functional connections between a neuron and its presynap tic inputs in vitro4,5. This technique has revealed distinct patterns of functional connectivity in different cortical areas, including the whisker barrel somatosensory3,6, motor7 and auditory8 cortices. These studies showed that altho ...
A circular model for song motor control in Serinus canaria
... more active the neuron will be. Previously we reported that a simple model could reproduce the pressure patterns used by canaries during song production (Trevisan et al., 2006; Alonso et al., 2009; Amador and Mindlin, 2014). This model consisted of a neural motif with an excitatory population, an in ...
... more active the neuron will be. Previously we reported that a simple model could reproduce the pressure patterns used by canaries during song production (Trevisan et al., 2006; Alonso et al., 2009; Amador and Mindlin, 2014). This model consisted of a neural motif with an excitatory population, an in ...
Repetition suppression - Philosophical Transactions of the Royal
... processing [9–11]. More recently, model-based fMRI studies have been used to identify signatures of neural activity, which contribute to particular computations, such as reward prediction error [12] and value computations [13–15]. While these seminal fMRI studies have provided insight into the funct ...
... processing [9–11]. More recently, model-based fMRI studies have been used to identify signatures of neural activity, which contribute to particular computations, such as reward prediction error [12] and value computations [13–15]. While these seminal fMRI studies have provided insight into the funct ...
Nervous Systems
... • Modern brain-imaging techniques suggest that consciousness is an emergent property of the brain based on activity in many areas of the cortex Prefrontal cortex ...
... • Modern brain-imaging techniques suggest that consciousness is an emergent property of the brain based on activity in many areas of the cortex Prefrontal cortex ...
Physiological Plasticity of Single Neurons in Auditory Cortex of the
... at the beginning of a session to produce a brief (2-5 s) pupillary dilation. The US was delivered to the subcutaneous tissue of the forepaw contralateral to the recording site via a pair of fine wire electrodes. Pupillary size was monitored by an infrared pupillometer (Cassady, Farley, Weinberger, & ...
... at the beginning of a session to produce a brief (2-5 s) pupillary dilation. The US was delivered to the subcutaneous tissue of the forepaw contralateral to the recording site via a pair of fine wire electrodes. Pupillary size was monitored by an infrared pupillometer (Cassady, Farley, Weinberger, & ...
Electrical Synapses between Dopaminergic Neurons of the
... error was calculated (⫺13.6 mV) according to the formula by Barry and Lynch (1991). The distance between two simultaneously recorded DA neurons was in the range of 10 –50 m. Except for DNQX (Tocris Cookson, Fischer Scientific, Illkirch, France), all chemicals (bicuculline methiodide, MK-801, carben ...
... error was calculated (⫺13.6 mV) according to the formula by Barry and Lynch (1991). The distance between two simultaneously recorded DA neurons was in the range of 10 –50 m. Except for DNQX (Tocris Cookson, Fischer Scientific, Illkirch, France), all chemicals (bicuculline methiodide, MK-801, carben ...