Responses of single neurons in the human brain during flash
... Approximately 12% (a total of 51 units) of the recorded neurons showed visual selectivity with enough stimulus repetitions during both the monocular presentation and the flash period for analysis5. The majority (69%) of these neurons followed the ...
... Approximately 12% (a total of 51 units) of the recorded neurons showed visual selectivity with enough stimulus repetitions during both the monocular presentation and the flash period for analysis5. The majority (69%) of these neurons followed the ...
Dissertation 20161009 Text Citations
... untrustworthy faces, most current research suggests a quadratic response, with increased activation associated with both highly trustworthy and highly untrustworthy faces. The quadratic response in the amygdala is consistent with two separate, but compatible hypotheses regarding why trustworthiness ...
... untrustworthy faces, most current research suggests a quadratic response, with increased activation associated with both highly trustworthy and highly untrustworthy faces. The quadratic response in the amygdala is consistent with two separate, but compatible hypotheses regarding why trustworthiness ...
Document
... clustered at the tip of the spiny anteater’s snout. The researchers made this discovery by exposing small areas of (5) the snout to extremely weak electrical fields and recording the transmission of resulting nervous activity to the brain. While it is true that tactile receptors, another kind of sen ...
... clustered at the tip of the spiny anteater’s snout. The researchers made this discovery by exposing small areas of (5) the snout to extremely weak electrical fields and recording the transmission of resulting nervous activity to the brain. While it is true that tactile receptors, another kind of sen ...
CLASSICAL AND INSTRUMENTAL CONDITIONING: THE
... reflexes (Fig. 4, right). My present concept concerning instrumental conditioning is basically similar to that proposed by these authors, except that it emphasizes the "direct" connections being formed between the CS center and the kinesthetic center programming the instrumental movement. The latter ...
... reflexes (Fig. 4, right). My present concept concerning instrumental conditioning is basically similar to that proposed by these authors, except that it emphasizes the "direct" connections being formed between the CS center and the kinesthetic center programming the instrumental movement. The latter ...
Interspike Intervals, Receptive Fields, and Information Encoding in
... Information. To measure the information contained in m-sequence responses, we use a method modified from Strong and colleagues (de Ruyter van Steveninck et al., 1997; Strong et al., 1998). Spike trains are divided into time bins, each of which may be occupied by zero, one, or more than one spike. Th ...
... Information. To measure the information contained in m-sequence responses, we use a method modified from Strong and colleagues (de Ruyter van Steveninck et al., 1997; Strong et al., 1998). Spike trains are divided into time bins, each of which may be occupied by zero, one, or more than one spike. Th ...
Modulation of Inhibition of Return by the Dopamine D2 Receptor
... cue-to-target SOAs were used to assess involuntary attention and IOR. In half of the blocks, a 40 ms SOA was used, consistent with the SOA required for allocation of involuntary attention (Posner and Cohen 1984). In the other half of the blocks, a 600 ms SOA was used, consistent with the time course ...
... cue-to-target SOAs were used to assess involuntary attention and IOR. In half of the blocks, a 40 ms SOA was used, consistent with the SOA required for allocation of involuntary attention (Posner and Cohen 1984). In the other half of the blocks, a 600 ms SOA was used, consistent with the time course ...
new insights into the functions of the superior temporal cortex
... received a lesion at one location only. In all other animals in which Watson et al.2 made STS lesions, ablation was added to pre-existing brain lesions (of inferior parietal cortex in two cases, and of frontal cortex and corpus callosum in the third). One of these monkeys (the one with frontal and c ...
... received a lesion at one location only. In all other animals in which Watson et al.2 made STS lesions, ablation was added to pre-existing brain lesions (of inferior parietal cortex in two cases, and of frontal cortex and corpus callosum in the third). One of these monkeys (the one with frontal and c ...
Precise visuotopic organization of the blind spot representation in
... was based on systematic comparisons between RFs obtained with CE vs. IE stimulation. We favored this strategy because comparisons could be made for the same recording and not across recordings, as would be the case, for example, when comparing RFs inside and outside the BSR for CE stimulation only. ...
... was based on systematic comparisons between RFs obtained with CE vs. IE stimulation. We favored this strategy because comparisons could be made for the same recording and not across recordings, as would be the case, for example, when comparing RFs inside and outside the BSR for CE stimulation only. ...
A COMMON REFERENCE FRAME FOR MOVEMENT PLANS IN
... neurons are involved in mediating spatial attention, then they should respond similarly on both tasks. On the other hand, if they are involved in movement planning, they should respond preferentially in one of the delay tasks. The results of this study are consistent with the latter hypothesis: duri ...
... neurons are involved in mediating spatial attention, then they should respond similarly on both tasks. On the other hand, if they are involved in movement planning, they should respond preferentially in one of the delay tasks. The results of this study are consistent with the latter hypothesis: duri ...
NUCLEUS ACCUMBENS NEURONAL ACTIVITY DURING A
... Table 1. The same cue types were used for each animal throughout training; thus, the noise, tone, flashing light, and solid light stimuli (described above) were made to correspond to cues A, B, X, and Y, respectively. All cues were always presented for 10 s. Preconditioning. Rats were divided into ...
... Table 1. The same cue types were used for each animal throughout training; thus, the noise, tone, flashing light, and solid light stimuli (described above) were made to correspond to cues A, B, X, and Y, respectively. All cues were always presented for 10 s. Preconditioning. Rats were divided into ...
Luczak, 2015 - University of Lethbridge
... different stimuli can encode information about the stimulus. In addition to differences in firing rate, it is well known that the precise spiking latency in the sensory cortex can differ between stimuli6,38,46. Nevertheless, for a single neuron, differences in response latency to different stimuli a ...
... different stimuli can encode information about the stimulus. In addition to differences in firing rate, it is well known that the precise spiking latency in the sensory cortex can differ between stimuli6,38,46. Nevertheless, for a single neuron, differences in response latency to different stimuli a ...
Abstract of “Primate frontal eye fields mediate spatial attention in
... frontal eye fields (FEF) is involved in the spatial selection of salient stimuli in complex visual environments for eye movements and spatial attention. The main goal of the following thesis is to understand the temporal dynamics of spatial selection and to understand the relationship of this measur ...
... frontal eye fields (FEF) is involved in the spatial selection of salient stimuli in complex visual environments for eye movements and spatial attention. The main goal of the following thesis is to understand the temporal dynamics of spatial selection and to understand the relationship of this measur ...
Natural Stimulation of the Nonclassical Receptive Field Increases
... E xtracellular, single-neuron recordings were made with epoxy-coated tungsten electrodes (AM Systems, Everett, WA and F HC, Bowdoinham, M E) from two awake, behaving monkeys (Macaca mulata). Signals were amplified, band-pass filtered, and isolated with a hardware window discriminator. Spike triggers ...
... E xtracellular, single-neuron recordings were made with epoxy-coated tungsten electrodes (AM Systems, Everett, WA and F HC, Bowdoinham, M E) from two awake, behaving monkeys (Macaca mulata). Signals were amplified, band-pass filtered, and isolated with a hardware window discriminator. Spike triggers ...
Acceleration of visually cued conditioned fear through the
... After only one session of fear conditioning, freezing during cue presentation reached a plateau for the tone-conditioned mice and the light-conditioned rewired mice (P > 0.5, t-test, comparing sessions one and three for each group; Fig. 3). In contrast, there was a significant difference between the ...
... After only one session of fear conditioning, freezing during cue presentation reached a plateau for the tone-conditioned mice and the light-conditioned rewired mice (P > 0.5, t-test, comparing sessions one and three for each group; Fig. 3). In contrast, there was a significant difference between the ...
Seana Coulson, Jonathan W. King and Marta Kutas
... levels is subserved by anatomically distinct brain areas, we might expect different ERP components to index syntactic versus semantic processing. Representation-specific ERP components would thus support the independence of syntax and semantics. Similarly, language-specific ERP components would supp ...
... levels is subserved by anatomically distinct brain areas, we might expect different ERP components to index syntactic versus semantic processing. Representation-specific ERP components would thus support the independence of syntax and semantics. Similarly, language-specific ERP components would supp ...
- D-Scholarship@Pitt
... on coronal sections through the midbrain and then used to reconstruct the injections sites across both the rostral–caudal and medial–lateral extent of the SC, as depicted in the dorsal views shown in the left hand column of Figure 2. The retinotopic map was estimated from previously published maps o ...
... on coronal sections through the midbrain and then used to reconstruct the injections sites across both the rostral–caudal and medial–lateral extent of the SC, as depicted in the dorsal views shown in the left hand column of Figure 2. The retinotopic map was estimated from previously published maps o ...
Vision for Prehension in the Medial Parietal Cortex - Gallettilab
... cortex (see Fig. 1C). This cortical region belongs to the classic visual association cortex, namely area 19 of Brodmann (for a thorough review on this topic, see Gamberini et al. 2015). However, since the first description of this region, it was evident that not all neurons were visually activated. C ...
... cortex (see Fig. 1C). This cortical region belongs to the classic visual association cortex, namely area 19 of Brodmann (for a thorough review on this topic, see Gamberini et al. 2015). However, since the first description of this region, it was evident that not all neurons were visually activated. C ...
Visual system
... • No flashing lights. No “window -shade” progression of symptomatic area. • No other neurologic symptoms, “and I would know if I had them.” • No head trauma. • No new medications. • No change of symptoms in any field of gaze (i.e. same “dim area” whether looking right, left, up, down, or straight ah ...
... • No flashing lights. No “window -shade” progression of symptomatic area. • No other neurologic symptoms, “and I would know if I had them.” • No head trauma. • No new medications. • No change of symptoms in any field of gaze (i.e. same “dim area” whether looking right, left, up, down, or straight ah ...
(2007) The most superficial sublamina of rat superior colluculus
... Because the cells within this layer had no or very low spontaneous activity, the microelectrode unit isolation was performed while the stimuli effective in eliciting responses were presented on a monitor. Isolation of single-neuron discharges in this layer was a challenging task and could be achieve ...
... Because the cells within this layer had no or very low spontaneous activity, the microelectrode unit isolation was performed while the stimuli effective in eliciting responses were presented on a monitor. Isolation of single-neuron discharges in this layer was a challenging task and could be achieve ...
Representation in the Human Brain of Food Texture and Oral Fat
... estimation) to the (second-level) parameter estimates generating a t statistics map for each group effect of interest. The above allowed us to perform conjunction analyses (Friston et al., 1999) at the second level. When appropriate, correlation analyses of the fMRI blood oxygenation level-dependent ...
... estimation) to the (second-level) parameter estimates generating a t statistics map for each group effect of interest. The above allowed us to perform conjunction analyses (Friston et al., 1999) at the second level. When appropriate, correlation analyses of the fMRI blood oxygenation level-dependent ...
Soto-Faraco (2003) Multisensory contributions to the perception of
... stimulus. However, no impression of auditory movement was reported by the participants in this study. It is possible that the apparent auditory motion reported in Mateeff et al.’s study may simply reflect an artefact of the use of a forced 2 Due to space constraints, this review will be restricted t ...
... stimulus. However, no impression of auditory movement was reported by the participants in this study. It is possible that the apparent auditory motion reported in Mateeff et al.’s study may simply reflect an artefact of the use of a forced 2 Due to space constraints, this review will be restricted t ...
Normalization as a canonical neural computation
... field of neuron j. A number of variations of the normalization equation have been applied to model different systems: Different inputs Dk can be assigned different weights αjk in the normalization pool. These weights define a suppressive field. The suppressive field may differ across neurons (hence ...
... field of neuron j. A number of variations of the normalization equation have been applied to model different systems: Different inputs Dk can be assigned different weights αjk in the normalization pool. These weights define a suppressive field. The suppressive field may differ across neurons (hence ...
Prefrontal and parietal cortex mediate the interference
... anticipation period is reflected in a time-varying increase or decrease of the blood-oxygenationlevel-dependent (BOLD) signal in the primary visual cortex, right supramarginal gyrus (SMG), supplementary motor area (SMA), right middle frontal cortex, and cerebellar vermis in humans [4,5]. It has also ...
... anticipation period is reflected in a time-varying increase or decrease of the blood-oxygenationlevel-dependent (BOLD) signal in the primary visual cortex, right supramarginal gyrus (SMG), supplementary motor area (SMA), right middle frontal cortex, and cerebellar vermis in humans [4,5]. It has also ...
Biological Cybernetics
... leads to a lateral increase in resolution compared with the situation of curve 1, where all receptive fields are assumed to have the same size. These findings suggest that the large receptive field neurons that are found in urodeles as well as in anurans (Grüsser-Cornehls and Himstedt 1976; Roth an ...
... leads to a lateral increase in resolution compared with the situation of curve 1, where all receptive fields are assumed to have the same size. These findings suggest that the large receptive field neurons that are found in urodeles as well as in anurans (Grüsser-Cornehls and Himstedt 1976; Roth an ...
Signals Conveyed in the Pulvinar Pathway from Superior Colliculus
... then appeared briefly in the periphery. The target was on for either 50 or 300 ms (this difference in duration was irrelevant for analysis of saccaderelated activity, which focused on a later part of the trial). After target disappearance, the monkey continued to maintain central fixation for a dela ...
... then appeared briefly in the periphery. The target was on for either 50 or 300 ms (this difference in duration was irrelevant for analysis of saccaderelated activity, which focused on a later part of the trial). After target disappearance, the monkey continued to maintain central fixation for a dela ...