Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Epilepsy surgery has good effect

Patients with drug-resistant epilepsy run the risk of gradual deterioration in their cognitive abilities. Surgical treatment generally puts an end to seizures but can have a negative effect on memory.

However, there is no further deterioration in memory, and some patients may even recover some of their memory capacity, reveals a thesis from the University of Gothenburg.

In a study carried out at the Sahlgrenska University Hospital in Gothenburg, one group of 36 patients were given medication for their epilepsy while a second group of 51 patients underwent surgery. There was also a control group of healthy volunteers. All of the participants underwent a series of tests, including intellectual capacity, memory, attention and mental processing speed.

The group treated with medication was followed up after five years.

“We found that the members of this group had more cognitive difficulties than members of the control group, and their memory, attention and processing speed had also deteriorated relative to the control group,” explains Lena Andersson-Roswall, registered psychologist and member of the Epilepsy Research Group at the Institute of Neuroscience and Physiology at the University of Gothenburg.

The surgically-treated patients were followed up after two and ten years. It emerged that these patients’ cognitive abilities did not decline between the two follow-ups.

“But verbal memory can be affected by surgery in the left temporal lobe. We also saw deterioration in these patients two years after surgery, but after ten years these memory problems had not worsened, although it did vary from person to person.”

The thesis also finds evidence of partial recovery of memory function in some patients.

Andersson-Roswall believes that it is important that patients with drug-resistant epilepsy are given an opportunity to be investigated for suitability for epilepsy surgery at an early stage of the disease, and that they are offered regular cognitive evaluations whatever the treatment.

“The results of our study can be used in investigations to advise on possible surgical treatment of those with drug-resistant epilepsy.”

Epilepsy takes the form of seizures, with or without loss of consciousness and simultaneous convulsions. The seizures are due to temporary disruptions in the brain’s electrical nerve impulses. The causes of epilepsy can be temporary or permanent damage to the brain, but cannot always be identified. Around 1% of the Swedish population has a tendency towards repeated epileptic seizures. Both medication and surgery are available to alleviate the symptoms.
For more information, please contact:
Athorized psychologist and researcher Lena Andersson-Roswall, tel: +46 707835898, e-mail:
Thesis for the degree of PhD (Medicine) at the Department of Clinical Neuroscience and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg.
Title of thesis: Longitudinal cognitive changes in medically and surgically treated patients with drug resistant partial epilepsy.
The thesis was successfully defended.
Download the full thesis:

Helena Aaberg | idw
Further information:

More articles from Health and Medicine:

nachricht Inflammation Triggers Unsustainable Immune Response to Chronic Viral Infection
24.10.2016 | Universität Basel

nachricht Resolving the mystery of preeclampsia
21.10.2016 | Universitätsklinikum Magdeburg

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Enormous dome in central Andes driven by huge magma body beneath it

25.10.2016 | Earth Sciences

First time-lapse footage of cell activity during limb regeneration

25.10.2016 | Life Sciences

Deep down fracking wells, microbial communities thrive

25.10.2016 | Earth Sciences

More VideoLinks >>>