PMID- 2372700
OWN - NLM
STAT- MEDLINE
DCOM- 19900827
LR  - 20190719
IS  - 0361-9230 (Print)
IS  - 0361-9230 (Linking)
VI  - 24
IP  - 6
DP  - 1990 Jun
TI  - Raccoon forelimb motorsensory cortex: II. Somatosensory inputs to single neurons.
PG  - 827-32
AB  - Somatosensory input to 431 neurons in MsI has been studied in unanesthetized, 
      paralyzed raccoons (Procyon lotor). The type of sensory input to neurons in 
      lateral sigmoid gyrus (cytoarchitectonic area 4) and in posterior sigmoid gyrus 
      (areas 4 and 3a) was not significantly different. Of these neurons, 36% were 
      activated by superficial cutaneous stimulation (touch, tap or hair deflection) 
      and 26% by deep stimulation (pressure or joint movement). Mute neurons (not 
      driven by any form of peripheral stimulation tested, or vaguely driven) comprised 
      38% of the sample. Only 4% of anterior sigmoid gyrus (area 6) neurons responded 
      to superficial or deep stimulation; 96% were mute. The majority of MsI neurons 
      had small (less than or equal to 20 cm2) peripheral receptive fields (PRFs). 
      There was a statistically significant trend for PRF size to decrease along the 
      proximal-distal axis of the forelimb. The area of MsI digit PRFs was 
      significantly larger than the area of SmI digit PRFs. Comparing the data for 
      raccoon MsI with information from the literature for cats and monkeys suggests 
      that the type and amount of somesthetic afferent input to forelimb MsI is related 
      to the behavioral uses to which each animal puts the forelimb.
FAU - Gugino, L D
AU  - Gugino LD
AD  - Department of Physiology and Endocrinology, Medical College of Georgia, Augusta 
      30912-3376.
FAU - Rowinski, M J
AU  - Rowinski MJ
FAU - Stoney, S D Jr
AU  - Stoney SD Jr
LA  - eng
GR  - NS-9757/NS/NINDS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - Brain Res Bull
JT  - Brain research bulletin
JID - 7605818
SB  - IM
MH  - Afferent Pathways/physiology
MH  - Animals
MH  - Electric Stimulation
MH  - Evoked Potentials, Somatosensory
MH  - Female
MH  - Forelimb/*innervation
MH  - Male
MH  - Mechanoreceptors/*physiology
MH  - Neurons, Afferent/physiology
MH  - Peripheral Nerves/*physiology
MH  - Raccoons/*physiology
MH  - Somatosensory Cortex/*physiology
MH  - Touch/*physiology
EDAT- 1990/06/01 00:00
MHDA- 2001/03/28 10:01
CRDT- 1990/06/01 00:00
PHST- 1990/06/01 00:00 [pubmed]
PHST- 2001/03/28 10:01 [medline]
PHST- 1990/06/01 00:00 [entrez]
AID - 0361-9230(90)90146-Q [pii]
AID - 10.1016/0361-9230(90)90146-q [doi]
PST - ppublish
SO  - Brain Res Bull. 1990 Jun;24(6):827-32. doi: 10.1016/0361-9230(90)90146-q.