Unisensory and multisensory convergence in a phonetotopic register

1995 ◽  
Vol 97 (5) ◽  
pp. 3309-3309
Author(s):  
Robert E. Remez
Keyword(s):  
Multisensory Convergence

Sources of Somatosensory Input to the Caudal Belt Areas of Auditory Cortex

Perception ◽  
10.1068/p5841 ◽  
2007 ◽  
Vol 36 (10) ◽  
pp. 1419-1430 ◽  
Author(s):  
Troy A Hackett ◽  
John F Smiley ◽  
Istvan Ulbert ◽  
George Karmos ◽  
Peter Lakatos ◽  
...  
Keyword(s):  
Auditory Cortex ◽  
Nonhuman Primates ◽  
Superior Temporal Gyrus ◽  
Cortical Areas ◽  
Neuron Response ◽  
Cortical Connections ◽  
Somatosensory Input ◽  
Multisensory Convergence ◽  
Medial Geniculate ◽  
Somatic Input

The auditory cortex of nonhuman primates is comprised of a constellation of at least twelve interconnected areas distributed across three major regions on the superior temporal gyrus: core, belt, and parabelt. Individual areas are distinguished on the basis of unique profiles comprising architectonic features, thalamic and cortical connections, and neuron response properties. Recent demonstrations of convergent auditory – somatosensory interactions in the caudomedial (CM) and caudolateral (CL) belt areas prompted us to pursue anatomical studies to identify the source(s) of somatic input to auditory cortex. Corticocortical and thalamocortical connections were revealed by injecting neuroanatomical tracers into CM, CL, and adjoining fields of marmoset ( Callithrix jacchus jacchus) and macaque ( Macaca mulatta) monkeys. In addition to auditory cortex, the cortical connections of CM and CL included somatosensory (retroinsular, Ri; granular insula, Ig) and multisensory areas (temporal parietal occipital, temporal parietal temporal). Thalamic inputs included the medial geniculate complex and several multisensory nuclei (supra- geniculate, posterior, limitans, medial pulvinar), but not the ventroposterior complex. Injections of the core (A1, R) and rostromedial areas of auditory cortex revealed sparse multisensory connections. The results suggest that areas Ri and Ig are the principle sources of somatosensory input to the caudal belt, while multisensory regions of cortex and thalamus may also contribute. The present data add to growing evidence of multisensory convergence in cortical areas previously considered to be ‘unimodal’, and also indicate that auditory cortical areas differ in this respect.

Multisensory convergence and integration in the neostriatum and globus pallidus of the rat

1995 ◽  
Vol 674 (1) ◽  
pp. 33-45 ◽  
Author(s):  
Eric H. Chudler ◽  
Kenji Sugiyama ◽  
Willie K. Dong
Keyword(s):  
Globus Pallidus ◽  
Multisensory Convergence

A NEUROBIOLOGICAL THEORY OF MEANING IN PERCEPTION PART IV: MULTICORTICAL PATTERNS OF AMPLITUDE MODULATION IN GAMMA EEG

2003 ◽  
Vol 13 (10) ◽  
pp. 2857-2866 ◽  
Author(s):  
WALTER J. FREEMAN ◽  
BRIAN C. BURKE
Keyword(s):  
Amplitude Modulation ◽  
Euclidean Distance ◽  
Time Windows ◽  
Gamma Activity ◽  
Moving Window ◽  
Conditioned Stimuli ◽  
Root Mean Square Amplitude ◽  
Gamma Range ◽  
Sensory Area ◽  
Multisensory Convergence

The aim of this study is to find spatial patterns of EEG amplitude in the gamma range of the EEGs from multiple sensory and limbic areas that demonstrate multisensory convergence and integration. 64 electrodes spread in small arrays were fixed on or in the olfactory, visual, auditory, somatomotor and entorhinal areas of cats and rabbits. The subjects were trained to discriminate 2 visual and then 2 auditory conditioned stimuli, one reinforced (CS+), the other not (CS-). A moving window was applied to the 6-s records from 20 trials of each CS including a 3-s prestimulus control (CS0). The root mean square amplitude was calculated for each signal in the gamma range, so each window gave a point in 64-space. EEG patterns from the CS+, CS- and CS0 conditions gave 3 clusters of points in 64-space. The Euclidean distance of each point to the nearest center of gravity of a cluster served for classification and estimation of the probability of correct classification. The results showed that the gamma activity (35–60 Hz in cats, 20–80 Hz in rabbits) in all five areas formed global patterns of amplitude modulation (AM) in time windows lasting ~100–200 ms and recurring at 2–4 Hz, which were correctly classified above chance levels (p<0.01). All areas contributed information to the AM patterns that served to classify the EEG epochs in the windows with respect to the conditioned stimuli. In conclusion, multisensory integration took place over the greater part of the hemisphere, despite lack of phase coherence among the gamma waves. The integration occurred rapidly enough that, within 300 ms of CS onset, activity in every sensory area was modified by what took place in every other sensory area.

Anatomical mechanisms and functional implications of multisensory convergence in early cortical processing

2003 ◽  
Vol 50 (1-2) ◽  
pp. 5-17 ◽  
Author(s):  
Charles E. Schroeder ◽  
John Smiley ◽  
Kaiming G. Fu ◽  
Tammy McGinnis ◽  
Monica N. O'Connell ◽  
...  
Keyword(s):  
Cortical Processing ◽  
Multisensory Convergence ◽  
Functional Implications

scholarly journals Multisensory Convergence of Visual and Vestibular Heading Cues in the Pursuit Area of the Frontal Eye Field

2015 ◽  
Vol 26 (9) ◽  
pp. 3785-3801 ◽  
Author(s):  
Yong Gu ◽  
Zhixian Cheng ◽  
Lihua Yang ◽  
Gregory C. DeAngelis ◽  
Dora E. Angelaki
Keyword(s):  
Frontal Eye Field ◽  
Multisensory Convergence ◽  
Eye Field

scholarly journals Multisensory convergence of visual and haptic object preference across development

2014 ◽  
Vol 56 ◽  
pp. 381-392 ◽  
Author(s):  
R. Joanne Jao ◽  
Thomas W. James ◽  
Karin Harman James
Keyword(s):  
Multisensory Convergence ◽  
Haptic Object ◽  
Object Preference

Multisensory convergence in auditory cortex, I. Cortical connections of the caudal superior temporal plane in macaque monkeys

2007 ◽  
Vol 502 (6) ◽  
pp. 894-923 ◽  
Author(s):  
John F. Smiley ◽  
Troy A. Hackett ◽  
Istvan Ulbert ◽  
George Karmas ◽  
Peter Lakatos ◽  
...  
Keyword(s):  
Auditory Cortex ◽  
Macaque Monkeys ◽  
Cortical Connections ◽  
Multisensory Convergence
Sign in / Sign up

Export Citation Format

Share Document