| Author(s) | Steinmetz PN; Roy A; Fitzgerald PJ; Hsiao SS; Johnson KO; Niebur E
|
|---|
| Title | Attention modulates synchronized neuronal firing in primate somatosensory cortex
|
|---|
| Source | NATURE 404(6774):187-190
|
|---|
| Date | 2000 MAR 9
|
|---|
| Type | Journal : Article
|
|---|
| LCR: 2 NCR: 25 LCS: 12 GCS: 117
| | Comment |
|
|---|
| Address | Johns Hopkins Univ, Zanvyl Krieger Mind Brain Inst, Baltimore, MD 21218 USA
|
|---|
| Abstract | A potentially powerful information processing strategy in the brain is to take advantage of the;temporal structure of neuronal spike trains. An increase in synchrony within the neural representation of an object or location increases the efficacy of that neural representation at the next synaptic stage in the brain; thus, increasing synchrony is a candidate for the neural correlate of attentional selection(1). We investigated the synchronous firing of pairs of neurons in the secondary somatosensory cortex (SII) of three monkeys trained to switch attention between a visual task and a tactile discrimination task. We found that most neuron pairs in SII cortex fired synchronously and, furthermore, that the degree of synchrony was affected by the monkey's attentional state. In the monkey performing the most difficult task, 35% of neuron pairs that fired synchronously changed their degree of synchrony when the monkey switched attention between the tactile and visual tasks. Synchrony increased in 80% and decreased in 20% of neuron pairs affected by attention.
|
|---|
| CR |
ABELES M, 1993, J NEUROPHYSIOL, V70, P1629
ABELES M, 1982, LOCAL CORTICAL CIRCU,
BRODY CD, 1998, J NEUROPHYSIOL, V80, P3345
BURTON H, 1997, SOMATOSENS MOT RES, V14, P237
CRAIG JC, 1996, SOMATOSENS MOT RES, V13, P188
CRICK FHC, 1990, SEMINARS NEUROSCIENC, V2, P263
DECHARMS RC, 1996, NATURE, V381, P610
DICARLO JJ, 1996, J NEUROSCI METH, V64, P75
ECKHORN R, 1988, BIOL CYBERN, V60, P121
EFRON B, 1993, INTRO BOOTSTRAP,
HAALMAN I, 1998, Z NATURFORSCH C, V53, P657
HSIAO SS, 1993, J NEUROPHYSIOL, V70, P444
MOUNTCASTLE VB, 1991, J NEUROSCI METH, V36, P77
MURTHY VN, 1996, J NEUROPHYSIOL, V76, P3968
NIEBUR E, 1994, J COMPUTATIONAL NEUR, V1, P141
PERKEL DH, 1967, BIOPHYS J, V7, P419
POGGIO GF, 1964, J NEUROPHYSIOL, V27, P517
PORANEN A, 1982, ELECTROEN CLIN NEURO, V53, P525
PRUT Y, 1998, J NEUROPHYSIOL, V79, P2857
ROY A, IN PRESS NEUROCOMPUT,
ROY S, 1999, J NEUROPHYSIOL, V81, P999
SCHNEIDER W, 1977, PSYCHOL REV, V84, P1
SHIFFRIN RM, 1977, PSYCHOL REV, V84, P127
SINGER W, 1993, ANNU REV PHYSIOL, V55, P349
VAADIA E, 1995, NATURE, V373, P515
|
|---|
|
|