Visual Response Properties of Neurons in Four Extrastriate Visual
... series was run on a total of 480 cells, 56 in M, 89 in DM, 80 in DL, 129 in MT, and 126 that could not be assigned to a particular area. A neuron’s spontaneous firing rate was subtracted from the mean firing rate during the stimulus presentation to obtain response rates, which were averaged for the ...
... series was run on a total of 480 cells, 56 in M, 89 in DM, 80 in DL, 129 in MT, and 126 that could not be assigned to a particular area. A neuron’s spontaneous firing rate was subtracted from the mean firing rate during the stimulus presentation to obtain response rates, which were averaged for the ...
Direct comparison of the neural substrates of
... process for retrieving information. It has been shown to vary depending on the retention interval between the initial exposure to the stimulus and its recognition (McIntosh et al., 1996) and on the level of familiarity, reflecting the degree to which the stimulus was learned before recognition (Raic ...
... process for retrieving information. It has been shown to vary depending on the retention interval between the initial exposure to the stimulus and its recognition (McIntosh et al., 1996) and on the level of familiarity, reflecting the degree to which the stimulus was learned before recognition (Raic ...
Perceptual and Semantic Contributions to
... Stimuli were likewise analyzed in terms of their mean harmonics-tonoise ratio (HNR), which was calculated using PRAAT software (http:// www.fon.hum.uva.nl/praat/). This is a method to quantify and compare dynamic acoustic properties (i.e., periodicity) of sounds (Lewis et al. 2005). The mean (±stand ...
... Stimuli were likewise analyzed in terms of their mean harmonics-tonoise ratio (HNR), which was calculated using PRAAT software (http:// www.fon.hum.uva.nl/praat/). This is a method to quantify and compare dynamic acoustic properties (i.e., periodicity) of sounds (Lewis et al. 2005). The mean (±stand ...
The Nervous System Introduction Organization of Neural Tissue
... – The amount of sensory cortex devoted to a body region depends on that region’s sensitivity, not its size – Most sensitive regions in humans: face (especially lips) and fingertips ...
... – The amount of sensory cortex devoted to a body region depends on that region’s sensitivity, not its size – Most sensitive regions in humans: face (especially lips) and fingertips ...
A non-invasive method to relate the timing of neural activity to white
... The neurophysiological basis of variability in the latency of evoked neural responses has been of interest for decades. We describe a method to identify white matter pathways that may contribute to inter-individual variability in the timing of neural activity. We investigated the relation of the lat ...
... The neurophysiological basis of variability in the latency of evoked neural responses has been of interest for decades. We describe a method to identify white matter pathways that may contribute to inter-individual variability in the timing of neural activity. We investigated the relation of the lat ...
article in press - Department of Physiology, Development and
... vowel and other nonspeech sounds to compare with the four types of stimuli used in the imaging experiment. In some forms, the carrier sinusoids were replaced with narrow bands of noise, making them more like whispered speech. In some, the envelopes of the carrier sinusoids were not modulated, produc ...
... vowel and other nonspeech sounds to compare with the four types of stimuli used in the imaging experiment. In some forms, the carrier sinusoids were replaced with narrow bands of noise, making them more like whispered speech. In some, the envelopes of the carrier sinusoids were not modulated, produc ...
PrImary Somatosensory Cortex
... Cerebrum has nuclei and additional gray matter in the cortex Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings ...
... Cerebrum has nuclei and additional gray matter in the cortex Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings ...
Structural changes that occur during normal aging of primate
... of motor cortex can become so full of pigment that their nuclei are displaced to one side of the cell body [29]. But otherwise the cell bodies of cortical neurons seem to be slightly affected by age. It is unclear how age affects the dendrites of most neurons. In one of the more recent studies, Jaco ...
... of motor cortex can become so full of pigment that their nuclei are displaced to one side of the cell body [29]. But otherwise the cell bodies of cortical neurons seem to be slightly affected by age. It is unclear how age affects the dendrites of most neurons. In one of the more recent studies, Jaco ...
Hasson-JNeurosci2008.. - Center for Neural Science
... In the time-reversal experiment, correlation coefficients were calculated between the responses to the following conditions: the first and second presentations of the original, forward movie (CF1:F2); the first and second presentations of the backward movie (CB1:B2); response to the forward movie an ...
... In the time-reversal experiment, correlation coefficients were calculated between the responses to the following conditions: the first and second presentations of the original, forward movie (CF1:F2); the first and second presentations of the backward movie (CB1:B2); response to the forward movie an ...
CEREBRAL CORTEX - Global Anatomy Home Page
... demonstrated the problem that you would predict—basically that the two halves of the brain cannot communicate with each other when the fibers connecting them are severed. Since sensory information normally impinges on both ears, both eyes, etc., this does not usually present a problem. In experiment ...
... demonstrated the problem that you would predict—basically that the two halves of the brain cannot communicate with each other when the fibers connecting them are severed. Since sensory information normally impinges on both ears, both eyes, etc., this does not usually present a problem. In experiment ...
Integrator or coincidence detector? The role of the cortical neuron
... excitatory and inhibitory PSPs.This perturbation does not change the total number or the timing of the action potentials in a significant way. An action potential is deleted (unfilled arrowheads in upper trace) or added (filled orrowheods in lower trace) in on/y a few instances. (B) A simulated neur ...
... excitatory and inhibitory PSPs.This perturbation does not change the total number or the timing of the action potentials in a significant way. An action potential is deleted (unfilled arrowheads in upper trace) or added (filled orrowheods in lower trace) in on/y a few instances. (B) A simulated neur ...
ling411-13 - Rice University
... “If neurons in the functional web are strongly linked, they should show similar response properties in neurophysiological experiments. “If the neurons of the functional web are necessary for the optimal processing of the represented entity, lesion of a significant portion of the network neurons must ...
... “If neurons in the functional web are strongly linked, they should show similar response properties in neurophysiological experiments. “If the neurons of the functional web are necessary for the optimal processing of the represented entity, lesion of a significant portion of the network neurons must ...
Assessing facial attractiveness: individual decisions and
... for unattractive faces (Chatterjee, Thomas, Smith, & Aguirre, 2009). Furthermore, its role in processing attractiveness proved to be more pronounced than that of the superior temporal sulcus (Iaria et al., 2008). The left precentral gyrus in the premotor area is responsible for the motoric represent ...
... for unattractive faces (Chatterjee, Thomas, Smith, & Aguirre, 2009). Furthermore, its role in processing attractiveness proved to be more pronounced than that of the superior temporal sulcus (Iaria et al., 2008). The left precentral gyrus in the premotor area is responsible for the motoric represent ...
PDF - Oxford Academic - Oxford University Press
... again, together with new pictures and a repetition of the new pictures after 30 s, while fMRI images were obtained. The results showed an immediate (30 s) and long-lasting (3 day) decrease in neural activity in bilateral occipitotemporal cortex following both nameable and nonsense object repetition ...
... again, together with new pictures and a repetition of the new pictures after 30 s, while fMRI images were obtained. The results showed an immediate (30 s) and long-lasting (3 day) decrease in neural activity in bilateral occipitotemporal cortex following both nameable and nonsense object repetition ...
Altered Fronto-Striatal and Fronto-Cerebellar Circuits in Heroin
... drug-related cue induced change of regional cerebral blood flow and its correlation with craving score. And then by functional connectivity analysis they identified the neuronal circuitry involved in opiate craving. Liu et al. [20] analyzed the functional connectivity intensity of brain region in re ...
... drug-related cue induced change of regional cerebral blood flow and its correlation with craving score. And then by functional connectivity analysis they identified the neuronal circuitry involved in opiate craving. Liu et al. [20] analyzed the functional connectivity intensity of brain region in re ...
CORTICAL AFFERENT INPUT TO THE PRINCIPALS REGION OF THE RHESUS MONKEY H.
... relative proportion of labeled cells in visual, auditory, somatosensory, premotor and limbic cortical areas projecting to each site. The only site with a significant proportion of projections from visual association areas was the ventral bank of the caudal principalis region (Fig. IB, Z), whereas th ...
... relative proportion of labeled cells in visual, auditory, somatosensory, premotor and limbic cortical areas projecting to each site. The only site with a significant proportion of projections from visual association areas was the ventral bank of the caudal principalis region (Fig. IB, Z), whereas th ...
Hierarchical somatosensory processing
... ones within area 3b. It should be pointed out, however, that there may be regional differences in extent of interareal connections, as interdigital integration in area 1 occurs more often for ulnar digits than for radial ones [19]. In the caudal part of the gyrus, there are unique neurons that respo ...
... ones within area 3b. It should be pointed out, however, that there may be regional differences in extent of interareal connections, as interdigital integration in area 1 occurs more often for ulnar digits than for radial ones [19]. In the caudal part of the gyrus, there are unique neurons that respo ...
- D-Scholarship@Pitt
... layers of the SC, which process visual information. To isolate inputs to the purely visual layers in the superficial SC from those inputs to the motor and multisensory layers deeper in the SC, two injections were placed to include the intermediate and deep layers of the SC. In another case, an injec ...
... layers of the SC, which process visual information. To isolate inputs to the purely visual layers in the superficial SC from those inputs to the motor and multisensory layers deeper in the SC, two injections were placed to include the intermediate and deep layers of the SC. In another case, an injec ...
Concept cells: the building blocks of declarative
... decision about the surgery can be reached. In the early 1970s, recordings from single neurons in these patients were first performed by inserting microwires through the depth electrodes117. Part a of the figure shows a sketch of these electrodes, part b shows the continuous (high-pass filtered) data ...
... decision about the surgery can be reached. In the early 1970s, recordings from single neurons in these patients were first performed by inserting microwires through the depth electrodes117. Part a of the figure shows a sketch of these electrodes, part b shows the continuous (high-pass filtered) data ...
Properties of spike train spectra in two parietal reach areas
... gamma frequency band (25–90 Hz). LFP activity reflects the movement of extracellular currents arising from the activation of a local neuronal ensemble and is easier to record than spiking activity, particularly over long time intervals (Mitzdorf 1985). These observations suggest that LFP activity ob ...
... gamma frequency band (25–90 Hz). LFP activity reflects the movement of extracellular currents arising from the activation of a local neuronal ensemble and is easier to record than spiking activity, particularly over long time intervals (Mitzdorf 1985). These observations suggest that LFP activity ob ...
Prefrontal abilities
... materials provided through primary cortex are distinguished, compared and patterned to form a percept, but only in a single modality. The step of unimodal perception is essential to higher mental functioning-all knowledge ofthe real world stems from sensing and perceiving. Intermixed with the unimod ...
... materials provided through primary cortex are distinguished, compared and patterned to form a percept, but only in a single modality. The step of unimodal perception is essential to higher mental functioning-all knowledge ofthe real world stems from sensing and perceiving. Intermixed with the unimod ...
The functional organization of the intraparietal sulcus in humans and
... Kanwisher, 2001). These data are supported by studies of patients presenting with lesions of the parietal cortex and neuropsychological deficits such as visuospatial neglect, different forms of apraxia and other visuomotor coordination problems (for reviews see, for example, Marshall & Fink, 2001, 2 ...
... Kanwisher, 2001). These data are supported by studies of patients presenting with lesions of the parietal cortex and neuropsychological deficits such as visuospatial neglect, different forms of apraxia and other visuomotor coordination problems (for reviews see, for example, Marshall & Fink, 2001, 2 ...
Chapter 12 PowerPoint - Hillsborough Community College
... • Allow us to give meaning to information received, store it as memory, compare it to previous experience, and decide on action to take ...
... • Allow us to give meaning to information received, store it as memory, compare it to previous experience, and decide on action to take ...
Chapter 12 PowerPoint - Hillsborough Community College
... – Medial aspect of temporal lobes (in piriform lobes) – Part of primitive rhinencephalon, along with olfactory bulbs and tracts – Remainder of rhinencephalon in humans becomes part of limbic system – Involved in conscious awareness of odors ...
... – Medial aspect of temporal lobes (in piriform lobes) – Part of primitive rhinencephalon, along with olfactory bulbs and tracts – Remainder of rhinencephalon in humans becomes part of limbic system – Involved in conscious awareness of odors ...
Organization of Visual Areas in Macaque and
... neighboring regions are often subtle, even when evaluated with the most sensitive anatomical and physiological techniques available. (ii) Internal heterogeneity. Many (perhaps most) visual areas are internally heterogeneous. This heterogeneity may be manifested by modularity (repetitive organization ...
... neighboring regions are often subtle, even when evaluated with the most sensitive anatomical and physiological techniques available. (ii) Internal heterogeneity. Many (perhaps most) visual areas are internally heterogeneous. This heterogeneity may be manifested by modularity (repetitive organization ...
Inferior temporal gyrus
The inferior temporal gyrus is placed below the middle temporal gyrus, and is connected behind with the inferior occipital gyrus; it also extends around the infero-lateral border on to the inferior surface of the temporal lobe, where it is limited by the inferior sulcus. This region is one of the higher levels of the ventral stream of visual processing, associated with the representation of complex object features, such as global shape. It may also be involved in face perception, and in the recognition of numbers.The inferior temporal gyrus is the anterior region of the temporal lobe located underneath the central temporal sulcus. The primary function of the inferior temporal gyrus - otherwise referenced as IT cortex - is associated with visual stimuli processing, namely visual object recognition, and has been suggested by recent experimental results as the final location of the ventral cortical visual system. The IT cortex in humans is also known as the Inferior Temporal Gyrus since it has been located to a specific region of the human temporal lobe. The IT processes visual stimuli of objects in our field of vision, and is involved with memory and memory recall to identify that object; it is involved with the processing and perception created by visual stimuli amplified in the V1, V2, V3, and V4 regions of the occipital lobe. This region processes the color and form of the object in the visual field and is responsible for producing the “what” from this visual stimuli, or in other words identifying the object based on the color and form of the object and comparing that processed information to stored memories of objects to identify that object.The IT cortex’s neurological significance is not just its contribution to the processing of visual stimuli in object recognition but also has been found to be a vital area with regards to simple processing of the visual field, difficulties with perceptual tasks and spatial awareness, and the location of unique single cells that possibly explain the IT cortex’s relation to memory.