May 2019, ScientificAmerican.com 19highlights the “almost permanent risk” that
the area faces when it comes to earthquake
hazards in general, explains Ghazoui, who
led the new research, which will appear in
Nature Communications.
This is the first time that researchers have
used lake sediment records to peer into the
Himalayas’ earthquake history, according to
Roger Bilham, a seismologist at the University
of Colorado Boulder, who was not involved in
the research—which, he says, “is just a teaser
of what can be done.” — Lucas JoelINDIANEPALCHINAMain (^) Him
alaya
n (^) Thru
st
ity, but the new work is a step toward higher
performance. “There’s a lot of room for im
provement, but we know the information is
there,” says neurosurgeon Edward Chang of
the University of California, San Francisco,
who was not involved in the study. “Over the
next few years it’s going to get even better—
this is a field that’s evolving quickly.”
There are some limitations. Mesgarani’s
team recorded brain activity from speech
perception regions, not speechproduction
ones; the researchers also evaluated their sys-
tem on only a small set of words instead of
complete sentences drawing on a large
vocabulary. (Other researchers, including
Chang, are already working on these prob-
lems.) Perhaps most important, the study was
designed to decode activity related to speech
that was actually heard rather than merely
imagined—the latter feat will be required to
develop a practical device. “The challenge for
all of us is actual versus imagined” speech,
Mesgarani says. — Simon Makin
Map by Mapping Specialists
The western Nepal part of the Main Himalayan
Thrust, a geologic fault at the junction of the
Indian and Eurasian Plates, has not experi-
enced a significant earthquake since 1505.
SOURCE: “BIMODAL SEISMICITY IN THE HIMALAYA CONTROLLED BY FAULT FRICTION AND GEOMETRY,” BY LUCA DAL ZILIO ET AL., IN
NATURE
COMMUNICATIONS,
VOL.
10, ARTICLE NO. 48; JANUARY 3, 2019
© 2019 Scientific American
highlights the “almost permanent risk” that
the area faces when it comes to earthquake
hazards in general, explains Ghazoui, who
led the new research, which will appear in
Nature Communications.
This is the fi rst time that researchers have
used lake sediment records to peer into the
Himalayas’ earthquake history, according to
Roger Bilham, a seismologist at the University
of Colorado Boulder, who was not involved in
the research—which, he says, “is just a teaser
of what can be done.” — Lucas Joel
INDIA
NEPAL
CHINA
Main
(^) Him
alaya
n Thrus
t
ity, but the new work is a step toward higher
performance. “There’s a lot of room for im -
provement, but we know the information is
there,” says neurosurgeon Edward Chang of
the University of California, San Francisco,
who was not involved in the study. “Over the
next few years it’s going to get even better—
this is a fi eld that’s evolving quickly.”
There are some limitations. Mesgarani’s
team recorded brain activity from speech-
perception regions, not speech-production
ones; the researchers also evaluated their sys-
tem on only a small set of words instead of
complete sentences drawing on a large
vocabulary. (Other researchers, including
Chang, are already working on these prob-
lems.) Perhaps most important, the study was
designed to decode activity related to speech
that was actually heard rather than merely
imagined—the latter feat will be required to
develop a practical device. “The challenge for
all of us is actual versus imagined” speech,
Mesgarani says. — Simon Makin
Map by Mapping Specialists
The western Nepal part of the Main Himalayan
Thrust, a geologic fault at the junction of the
Indian and Eurasian Plates, has not experi-
enced a signifi cant earthquake since 1505.
SOURCE: “BIMODAL SEISMICITY IN THE HIMALAYA CONTROLLED BY FAULT FRICTION AND GEOMETRY,” BY LUCA DAL ZILIO ET AL., IN
NATURE
COMMUNICATIONS,
VOL. 10, ARTICLE NO. 48; JANUARY 3, 2019
sad0519Adva3p.indd 19 3/21/19 3:20 PM
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